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version 1.43, 2021/02/20 15:28:54 version 1.54, 2022/07/23 17:43:46
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 2021-02-20  Nicolas Brouard   <brouard@ined.fr>  2022-07-23  Nicolas Brouard   <brouard@ined.fr>
   
         * imach.c (Module): Fix bug on quitting after result lines!          * r29 W and not sqrt(Wald)
   
 2021-02-12  Nicolas Brouard   <brouard@ined.fr>  2022-07-22  Nicolas Brouard   <brouard@ined.fr>
   
         * imach.c (Module): The use of a Windows BOM (huge) file is now an error          *  imach.c (Module): Output of Wald test in the htm file and not only in the log. 
   
   2022-05-30  Brouard Nicolas  <brouard@brouard.name>
 2021-02-11  Nicolas  Brouard   <brouard@ined.fr>  
           * imach.c: With products of covariates (age or dummies or
         *  (Module): imach.c Someone entered 'results:' instead of 'result:'. Now it is an error which is printed.          quantitatives), estimates of parameters were good but when
           estimating variances the positions of newly created covariates
 2020-02-22  Brouard Nicolas  <brouard@ined.fr>          were wrongly assigned and results were wrong. Thank to Feinua_Sun!
   
         *  (Module): imach.c Update mle=-3 (for computing Life expectancy  2022-05-24  Nicolas Brouard   <brouard@ined.fr>
         and life table from the data without any state)  
           * imach.c (Module): Some attempts to find a bug of wrong estimates
 2019-05-20  Brouard Nicolas  <brouard@ined.fr>          of confidencce intervals with product in the equation modelC
   
         * version.h: Summary: version 0.99.r19  2022-05-15  Nicolas Brouard   <brouard@ined.fr>
   
         * imach.c: Summary: Projection syntax simplified          * imach.c (Module):  Some minor improvements
         We can now start projections, forward or backward, from the mean date  
         of inteviews up to or down to a number of years of projection:  2022-04-13  Brouard Nicolas  <brouard@brouard.name>
         prevforecast=1 yearsfproj=15.3 mobil_average=0  
         or          * imach.c (Module): Adding link to text data files
         prevforecast=1 starting-proj-date=1/1/2007 final-proj-date=12/31/2017 mobil_average=0  
         or  2022-04-11  Nicolas Brouard   <brouard@ined.fr>
         prevbackcast=1 yearsbproj=12.3 mobil_average=1  
         or          * imach.c (Module): Error in rewriting the 'r' file with yearsfproj or yearsbproj fixed
         prevbackcast=1 starting-back-date=1/10/1999 final-back-date=1/1/1985 mobil_average=1  
   2022-04-05  Brouard Nicolas  <brouard@ined.fr>
 2019-05-18  Brouard Nicolas  <brouard@ined.fr>  
           * imach.c (Module): Fixed covariates (dummy or quantitative)
         * imach.c: Summary: doxygen tex bug          with missing values have never been allowed but are ERRORS and
           program quits. Standard deviations of fixed covariates were
 2019-05-16  Brouard Nicolas  <brouard@ined.fr>          wrongly computed. Mean and standard deviations of time varying
           covariates are still not computed.
         * imach.c: Summary: There was some wrong lines added  
   2022-03-17  Brouard Nicolas  <brouard@ined.fr>
 2019-05-09  Brouard Nicolas  <brouard@ined.fr>  
           * 99r25 Improvements in fixing discrepancies between covariates
         * Makefile, imach.c: *** empty log message ***          missing in result line but in model. 
   
         * ChangeLog: Summary: C=  *Wed Mar 31 2021  Nicolas Brouard   <brouard@ined.fr>
           * imach.c (Module): Still bugs in the result loop. Thank to Holly Benett
         * imach.c: Summary: Some updates  
   *2021-03-08  Nicolas Brouard   <brouard@ined.fr>
         * imach.c: Summary: Before ncovmax  
           * ./ (Module): Fixed bug on result:
         * version.h: *** empty log message ***  
   *2021-02-20  Nicolas Brouard   <brouard@ined.fr>
         * imach.c: Summary: 0.99r18 unlimited number of individuals  
         The number n which was limited to 20,000 cases is now unlimited, from firstobs to lastobs. If the number is too for the virtual memory, probably an error will occur.          * imach.c (Module): Fix bug on quitting after result lines!
           (Module): Version 0.99r21
 2018-12-13  Brouard Nicolas  <brouard@ined.fr>  
   2021-02-12  Nicolas Brouard   <brouard@ined.fr>
         * imach.c: Summary: Bug for young ages (<-30) will be in r17  
           * imach.c (Module): The use of a Windows BOM (huge) file is now an error
 2018-12-05  Brouard Nicolas  <brouard@ined.fr>  
   
         * Makefile: Summary: 0.99r16  2021-02-11  Nicolas  Brouard   <brouard@ined.fr>
   
 2018-05-02  Brouard Nicolas  <brouard@ined.fr>          *  (Module): imach.c Someone entered 'results:' instead of 'result:'. Now it is an error which is printed.
   
         * imach.c: Summary: Some bugs fixed  2020-02-22  Brouard Nicolas  <brouard@ined.fr>
   
 2018-05-02  Brouard Nicolas  <brouard@ined.fr>          *  (Module): imach.c Update mle=-3 (for computing Life expectancy
           and life table from the data without any state)
         * imach.c:  Summary: Bug for young ages (<-30) will be in r17  
   2019-05-20  Brouard Nicolas  <brouard@ined.fr>
 2018-05-02  Brouard Nicolas  <brouard@ined.fr>  
           * version.h: Summary: version 0.99.r19
         * imach.c: Summary: Some bugs fixed  
           * imach.c: Summary: Projection syntax simplified
 2018-05-01  Brouard Nicolas  <brouard@ined.fr>          We can now start projections, forward or backward, from the mean date
           of inteviews up to or down to a number of years of projection:
         * imach.c:          prevforecast=1 yearsfproj=15.3 mobil_average=0
         Summary: Bug fixed by providing frequencies only for non missing covariates          or
           prevforecast=1 starting-proj-date=1/1/2007 final-proj-date=12/31/2017 mobil_average=0
 2018-04-27  Brouard Nicolas  <brouard@ined.fr>          or
           prevbackcast=1 yearsbproj=12.3 mobil_average=1
         * imach.c: Summary: some minor bugs          or
           prevbackcast=1 starting-back-date=1/10/1999 final-back-date=1/1/1985 mobil_average=1
 2018-04-21  Brouard Nicolas  <brouard@ined.fr>  
   2019-05-18  Brouard Nicolas  <brouard@ined.fr>
         * README.txt: *** empty log message ***  
           * imach.c: Summary: doxygen tex bug
         * imach.c: Summary: Some bugs fixed, valgrind tested  
   2019-05-16  Brouard Nicolas  <brouard@ined.fr>
 2018-04-20  Brouard Nicolas  <brouard@ined.fr>  
           * imach.c: Summary: There was some wrong lines added
         * Makefile, README.txt, setup.iss: Summary: imach 0.99r16  
   2019-05-09  Brouard Nicolas  <brouard@ined.fr>
         * imach.c:  
         Summary: Computing mean and stdeviation of fixed quantitative variables          * Makefile, imach.c: *** empty log message ***
   
 2018-04-19  Brouard Nicolas  <brouard@ined.fr>          * ChangeLog: Summary: C=
   
         * imach.c: Summary: Some minor bugs fixed          * imach.c: Summary: Some updates
   
         * version.h: *** empty log message ***          * imach.c: Summary: Before ncovmax
   
 2018-02-27  Brouard Nicolas  <brouard@ined.fr>          * version.h: *** empty log message ***
   
         * imach.c: *** empty log message ***          * imach.c: Summary: 0.99r18 unlimited number of individuals
           The number n which was limited to 20,000 cases is now unlimited, from firstobs to lastobs. If the number is too for the virtual memory, probably an error will occur.
         * imach.c: Summary: Adding second argument for quitting  
   2018-12-13  Brouard Nicolas  <brouard@ined.fr>
 2018-02-21  Brouard Nicolas  <brouard@ined.fr>  
           * imach.c: Summary: Bug for young ages (<-30) will be in r17
         * Makefile, README.txt, imach.c: Summary: 0.99r15  
         New Makefile with recent VirtualBox 5.26. Bug in sqrt negatve in imach.c  2018-12-05  Brouard Nicolas  <brouard@ined.fr>
   
 2017-07-20  Brouard Nicolas  <brouard@ined.fr>          * Makefile: Summary: 0.99r16
   
         * imach.c: Summary: temporary working  2018-05-02  Brouard Nicolas  <brouard@ined.fr>
   
 2017-07-19  Brouard Nicolas  <brouard@ined.fr>          * imach.c: Summary: Some bugs fixed
   
         * imach.c: Summary: Bug for mobil_average=0 and prevforecast fixed(?)  2018-05-02  Brouard Nicolas  <brouard@ined.fr>
   
 2017-07-17  Brouard Nicolas  <brouard@ined.fr>          * imach.c:  Summary: Bug for young ages (<-30) will be in r17
   
         * imach.c: Summary: BOM files can be read now  2018-05-02  Brouard Nicolas  <brouard@ined.fr>
   
 2017-06-30  Brouard Nicolas  <brouard@ined.fr>          * imach.c: Summary: Some bugs fixed
   
         * imach.c: Summary: Graphs improvements  2018-05-01  Brouard Nicolas  <brouard@ined.fr>
   
         * imach.c: Summary: Saito's color          * imach.c:
           Summary: Bug fixed by providing frequencies only for non missing covariates
 2017-06-29  Brouard Nicolas  <brouard@ined.fr>  
   2018-04-27  Brouard Nicolas  <brouard@ined.fr>
         * imach.c: Summary: Version 0.99r14  
           * imach.c: Summary: some minor bugs
 2017-06-27  Brouard Nicolas  <brouard@ined.fr>  
   2018-04-21  Brouard Nicolas  <brouard@ined.fr>
         * imach.c: Summary: More documentation on projections  
           * README.txt: *** empty log message ***
         * imach.c: Summary: Color of backprojection changed from 6 to 5(yellow)  
           * imach.c: Summary: Some bugs fixed, valgrind tested
         * imach.c: Summary: Some bug with rint  
   2018-04-20  Brouard Nicolas  <brouard@ined.fr>
 2017-05-24  Brouard Nicolas  <brouard@ined.fr>  
           * Makefile, README.txt, setup.iss: Summary: imach 0.99r16
         * imach.c: *** empty log message ***  
           * imach.c:
 2017-05-23  Brouard Nicolas  <brouard@ined.fr>          Summary: Computing mean and stdeviation of fixed quantitative variables
   
         * imach.c: Summary: Code into subroutine, cleanings  2018-04-19  Brouard Nicolas  <brouard@ined.fr>
   
 2017-05-18  Brouard Nicolas  <brouard@ined.fr>          * imach.c: Summary: Some minor bugs fixed
   
         * imach.c:          * version.h: *** empty log message ***
         Summary: backprojection and confidence intervals of backprevalence  
   2018-02-27  Brouard Nicolas  <brouard@ined.fr>
 2017-05-13  Brouard Nicolas  <brouard@ined.fr>  
           * imach.c: *** empty log message ***
         * imach.c: Summary: temporary save for backprojection  
           * imach.c: Summary: Adding second argument for quitting
         * imach.c: Summary: Version 0.99r13 (improvements and bugs fixed)  
   2018-02-21  Brouard Nicolas  <brouard@ined.fr>
 2017-04-26  Brouard Nicolas  <brouard@ined.fr>  
           * Makefile, README.txt, imach.c: Summary: 0.99r15
         * imach.c: Summary: imach 0.99r13 Some bugs fixed          New Makefile with recent VirtualBox 5.26. Bug in sqrt negatve in imach.c
   
         * imach.c: Summary: Labels in graphs  2017-07-20  Brouard Nicolas  <brouard@ined.fr>
   
 2017-04-24  Brouard Nicolas  <brouard@ined.fr>          * imach.c: Summary: temporary working
   
         * imach.c: Summary: to save  2017-07-19  Brouard Nicolas  <brouard@ined.fr>
   
 2017-04-18  Brouard Nicolas  <brouard@ined.fr>          * imach.c: Summary: Bug for mobil_average=0 and prevforecast fixed(?)
   
         * imach.c: *** empty log message ***  2017-07-17  Brouard Nicolas  <brouard@ined.fr>
   
 2017-04-05  Brouard Nicolas  <brouard@ined.fr>          * imach.c: Summary: BOM files can be read now
   
         * imach.c: Summary: Bug in E_ as well as in T_ fixed nres-1 vs k1-1  2017-06-30  Brouard Nicolas  <brouard@ined.fr>
   
 2017-04-04  Brouard Nicolas  <brouard@ined.fr>          * imach.c: Summary: Graphs improvements
   
         * imach.c: Summary: Gnuplot indexations fixed (humm)          * imach.c: Summary: Saito's color
   
         * imach.c:  2017-06-29  Brouard Nicolas  <brouard@ined.fr>
         Summary: Some errors to warnings only if date of death is unknown but status is death we could set to pi3  
           * imach.c: Summary: Version 0.99r14
 2017-04-03  Brouard Nicolas  <brouard@ined.fr>  
   2017-06-27  Brouard Nicolas  <brouard@ined.fr>
         * imach.c: Summary: Version 0.99r12  
         Some cleanings, conformed with updated documentation.          * imach.c: Summary: More documentation on projections
   
 2017-03-30  Brouard Nicolas  <brouard@ined.fr>          * imach.c: Summary: Color of backprojection changed from 6 to 5(yellow)
   
         * version.h: *** empty log message ***          * imach.c: Summary: Some bug with rint
   
         * version.h: Summary:0.99r11  2017-05-24  Brouard Nicolas  <brouard@ined.fr>
   
 2017-03-29  Brouard Nicolas  <brouard@ined.fr>          * imach.c: *** empty log message ***
   
         * imach.c: Summary: Temp  2017-05-23  Brouard Nicolas  <brouard@ined.fr>
   
 2017-03-27  Brouard Nicolas  <brouard@ined.fr>          * imach.c: Summary: Code into subroutine, cleanings
   
         * imach.c: Summary: Temporary  2017-05-18  Brouard Nicolas  <brouard@ined.fr>
   
 2017-03-08  Brouard Nicolas  <brouard@ined.fr>          * imach.c:
           Summary: backprojection and confidence intervals of backprevalence
         * imach.c: Summary: IMaCh version 0.99r10 bugs in gnuplot fixed  
   2017-05-13  Brouard Nicolas  <brouard@ined.fr>
         * imach.c: Summary: Fixing data parameter line  
           * imach.c: Summary: temporary save for backprojection
 2016-12-15  Brouard Nicolas  <brouard@ined.fr>  
           * imach.c: Summary: Version 0.99r13 (improvements and bugs fixed)
         * imach.c: Summary: 0.99 in progress  
   2017-04-26  Brouard Nicolas  <brouard@ined.fr>
 2016-09-15  Brouard Nicolas  <brouard@ined.fr>  
           * imach.c: Summary: imach 0.99r13 Some bugs fixed
         * imach.c: *** empty log message ***  
           * imach.c: Summary: Labels in graphs
         * imach.c: Summary: not working  
   2017-04-24  Brouard Nicolas  <brouard@ined.fr>
 2016-09-08  Brouard Nicolas  <brouard@ined.fr>  
           * imach.c: Summary: to save
         * imach.c: Summary: continue  
   2017-04-18  Brouard Nicolas  <brouard@ined.fr>
 2016-09-07  Brouard Nicolas  <brouard@ined.fr>  
           * imach.c: *** empty log message ***
         * imach.c: Summary: Starting values from frequencies  
   2017-04-05  Brouard Nicolas  <brouard@ined.fr>
         * imach.c: *** empty log message ***  
           * imach.c: Summary: Bug in E_ as well as in T_ fixed nres-1 vs k1-1
 2016-09-02  Brouard Nicolas  <brouard@ined.fr>  
   2017-04-04  Brouard Nicolas  <brouard@ined.fr>
         * imach.c: *** empty log message ***  
           * imach.c: Summary: Gnuplot indexations fixed (humm)
 2016-08-30  Brouard Nicolas  <brouard@ined.fr>  
           * imach.c:
         * imach.c: Summary: Fixing a lots          Summary: Some errors to warnings only if date of death is unknown but status is death we could set to pi3
   
 2016-08-29  Brouard Nicolas  <brouard@ined.fr>  2017-04-03  Brouard Nicolas  <brouard@ined.fr>
   
         * imach.c: Summary: gnuplot problem in Back projection to fix          * imach.c: Summary: Version 0.99r12
           Some cleanings, conformed with updated documentation.
         * imach.c: Summary: Better  
   2017-03-30  Brouard Nicolas  <brouard@ined.fr>
 2016-08-26  Brouard Nicolas  <brouard@ined.fr>  
           * version.h: *** empty log message ***
         * imach.c:  
         Summary: Improvement in Powell output in order to copy and paste          * version.h: Summary:0.99r11
   
         * imach.c: Summary: Starting tests of 0.99  2017-03-29  Brouard Nicolas  <brouard@ined.fr>
   
         * imach.c: Summary: to valgrind          * imach.c: Summary: Temp
   
 2016-08-25  Brouard Nicolas  <brouard@ined.fr>  2017-03-27  Brouard Nicolas  <brouard@ined.fr>
   
         * imach.c: *** empty log message ***          * imach.c: Summary: Temporary
   
 2016-08-23  Brouard Nicolas  <brouard@ined.fr>  2017-03-08  Brouard Nicolas  <brouard@ined.fr>
   
         * imach.c: *** empty log message ***          * imach.c: Summary: IMaCh version 0.99r10 bugs in gnuplot fixed
   
         * imach.c: Summary: not working          * imach.c: Summary: Fixing data parameter line
   
 2016-08-22  Brouard Nicolas  <brouard@ined.fr>  2016-12-15  Brouard Nicolas  <brouard@ined.fr>
   
         * imach.c: Summary: not working          * imach.c: Summary: 0.99 in progress
   
         * imach.c: Summary: Not working  2016-09-15  Brouard Nicolas  <brouard@ined.fr>
   
 2016-07-23  Brouard Nicolas  <brouard@ined.fr>          * imach.c: *** empty log message ***
   
         * imach.c: Summary: Completing for func too          * imach.c: Summary: not working
   
 2016-07-22  Brouard Nicolas  <brouard@ined.fr>  2016-09-08  Brouard Nicolas  <brouard@ined.fr>
   
         * imach.c: Summary: Fixing some arrays, still debugging          * imach.c: Summary: continue
   
 2016-07-21  Brouard Nicolas  <brouard@ined.fr>  2016-09-07  Brouard Nicolas  <brouard@ined.fr>
   
         * imach.c:          * imach.c: Summary: Starting values from frequencies
         Summary: 0.99 working (more or less) for Asian Workshop on multitate methods  
           * imach.c: *** empty log message ***
 2016-07-12  Brouard Nicolas  <brouard@ined.fr>  
   2016-09-02  Brouard Nicolas  <brouard@ined.fr>
         * imach.c: Summary: temp  
           * imach.c: *** empty log message ***
         * imach.c: Summary: saving but not running  
   2016-08-30  Brouard Nicolas  <brouard@ined.fr>
 2016-07-01  Brouard Nicolas  <brouard@ined.fr>  
           * imach.c: Summary: Fixing a lots
         * imach.c: Summary: Fixes  
   2016-08-29  Brouard Nicolas  <brouard@ined.fr>
 2016-02-19  Brouard Nicolas  <brouard@ined.fr>  
           * imach.c: Summary: gnuplot problem in Back projection to fix
         * imach-0.98r.c: Summary: Kind of 0.98r? series, starting with r7  
           * imach.c: Summary: Better
         * setup.iss, Makefile, version.h: *** empty log message ***  
   2016-08-26  Brouard Nicolas  <brouard@ined.fr>
         * imach.c: Summary: temporary  
           * imach.c:
 2016-02-17  Brouard Nicolas  <brouard@ined.fr>          Summary: Improvement in Powell output in order to copy and paste
   
         * imach.c: Summary: Probably last 0.98 stable version 0.98r6          * imach.c: Summary: Starting tests of 0.99
   
 2016-02-16  Brouard Nicolas  <brouard@ined.fr>          * imach.c: Summary: to valgrind
   
         * imach.c: Summary: minor bug  2016-08-25  Brouard Nicolas  <brouard@ined.fr>
   
         * imach.c: Summary: 0.99r2          * imach.c: *** empty log message ***
   
 2016-02-15  Brouard Nicolas  <brouard@ined.fr>  2016-08-23  Brouard Nicolas  <brouard@ined.fr>
   
         * imach.c: *** empty log message ***          * imach.c: *** empty log message ***
   
 2016-02-12  Brouard Nicolas  <brouard@ined.fr>          * imach.c: Summary: not working
   
         * imach.c: Summary: 0.99 Back projections  2016-08-22  Brouard Nicolas  <brouard@ined.fr>
   
 2015-12-23  Brouard Nicolas  <brouard@ined.fr>          * imach.c: Summary: not working
   
         * imach.c: Summary: Experimental backcast          * imach.c: Summary: Not working
   
 2015-12-18  Brouard Nicolas  <brouard@ined.fr>  2016-07-23  Brouard Nicolas  <brouard@ined.fr>
   
         * imach.c: Summary: 0.98r4 Warning and status=-2          * imach.c: Summary: Completing for func too
   
         Version 0.98r4 is now:  2016-07-22  Brouard Nicolas  <brouard@ined.fr>
          - displaying an error when status is -1, date of interview unknown and date of death known;  
          - permitting a status -2 when the vital status is unknown at a known date of right truncation.          * imach.c: Summary: Fixing some arrays, still debugging
         Older changes concerning s=-2, dating from 2005 have been supersed.  
   2016-07-21  Brouard Nicolas  <brouard@ined.fr>
         * Makefile: *** empty log message ***  
           * imach.c:
 2015-12-16  Brouard Nicolas  <brouard@ined.fr>          Summary: 0.99 working (more or less) for Asian Workshop on multitate methods
   
         * Makefile: *** empty log message ***  2016-07-12  Brouard Nicolas  <brouard@ined.fr>
   
         * imach.c: Summary: 0.98r4 working          * imach.c: Summary: temp
   
         * Makefile: Summary: linuxrpm added          * imach.c: Summary: saving but not running
   
         * Makefile: *** empty log message ***  2016-07-01  Brouard Nicolas  <brouard@ined.fr>
   
         * imach.c: Summary: temporary not working          * imach.c: Summary: Fixes
   
 2015-12-11  Brouard Nicolas  <brouard@ined.fr>  2016-02-19  Brouard Nicolas  <brouard@ined.fr>
   
         * imach.c: Summary: 0.98r4          * imach-0.98r.c: Summary: Kind of 0.98r? series, starting with r7
   
 2015-12-08  Brouard Nicolas  <brouard@ined.fr>          * setup.iss, Makefile, version.h: *** empty log message ***
   
         * Makefile: *** empty log message ***          * imach.c: Summary: temporary
   
 2015-11-21  Brouard Nicolas  <brouard@ined.fr>  2016-02-17  Brouard Nicolas  <brouard@ined.fr>
   
         * Makefile:          * imach.c: Summary: Probably last 0.98 stable version 0.98r6
         Summary: VBoxManage change from execute --image to run --exe and --wait-exit doesn't exist any more  
   2016-02-16  Brouard Nicolas  <brouard@ined.fr>
         * imach.c: Summary: minor typo  
           * imach.c: Summary: minor bug
         * imach.c: Summary: 0.98r3 with some graph of projected cross-sectional  
           * imach.c: Summary: 0.99r2
         Author: Nicolas Brouard  
   2016-02-15  Brouard Nicolas  <brouard@ined.fr>
 2015-11-18  Brouard Nicolas  <brouard@ined.fr>  
           * imach.c: *** empty log message ***
         * imach.c: Summary: Start working on projected prevalences  
   2016-02-12  Brouard Nicolas  <brouard@ined.fr>
 2015-11-17  Brouard Nicolas  <brouard@ined.fr>  
           * imach.c: Summary: 0.99 Back projections
         * imach.c: Summary: Adding ftolpl parameter  
         Author: N Brouard  2015-12-23  Brouard Nicolas  <brouard@ined.fr>
   
         We had difficulties to get smoothed confidence intervals. It was due          * imach.c: Summary: Experimental backcast
         to the period prevalence which wasn't computed accurately. The inner  
         parameter ftolpl is now an outer parameter of the .imach parameter  2015-12-18  Brouard Nicolas  <brouard@ined.fr>
         file after estepm. If ftolpl is small 1.e-4 and estepm too,  
         computation are long.          * imach.c: Summary: 0.98r4 Warning and status=-2
   
         * version.h: *** empty log message ***          Version 0.98r4 is now:
            - displaying an error when status is -1, date of interview unknown and date of death known;
         * imach.c: Summary: temporary           - permitting a status -2 when the vital status is unknown at a known date of right truncation.
           Older changes concerning s=-2, dating from 2005 have been supersed.
 2015-10-27  Brouard Nicolas  <brouard@ined.fr>  
           * Makefile: *** empty log message ***
         * Makefile: *** empty log message ***  
   2015-12-16  Brouard Nicolas  <brouard@ined.fr>
         * setup.iss.in: Summary: some new subdirs  
           * Makefile: *** empty log message ***
         * imach.c: *** empty log message ***  
           * imach.c: Summary: 0.98r4 working
         * setup.iss.in:  
         Summary: Adding gnuplot 5.1 with bin and etc for pango fonts          * Makefile: Summary: linuxrpm added
   
 2015-10-24  Brouard Nicolas  <brouard@ined.fr>          * Makefile: *** empty log message ***
   
         * imach.c: *** empty log message ***          * imach.c: Summary: temporary not working
   
 2015-10-23  Brouard Nicolas  <brouard@ined.fr>  2015-12-11  Brouard Nicolas  <brouard@ined.fr>
   
         * imach.c:          * imach.c: Summary: 0.98r4
         Summary: 0.98r3 some clarification for graphs on likelihood contributions  
   2015-12-08  Brouard Nicolas  <brouard@ined.fr>
 2015-10-01  Brouard Nicolas  <brouard@ined.fr>  
           * Makefile: *** empty log message ***
         * imach.c: Summary: Some new graphs of contribution to likelihood  
   2015-11-21  Brouard Nicolas  <brouard@ined.fr>
 2015-09-30  Brouard Nicolas  <brouard@ined.fr>  
           * Makefile:
         * Makefile:          Summary: VBoxManage change from execute --image to run --exe and --wait-exit doesn't exist any more
         Summary: Version read from version.h, itself read with cmake  
           * imach.c: Summary: minor typo
         * imach.c: Summary: looking at better estimation of the hessian  
           * imach.c: Summary: 0.98r3 with some graph of projected cross-sectional
         Also a better criteria for convergence to the period prevalence And  
         therefore adding the number of years needed to converge. (The          Author: Nicolas Brouard
         prevalence in any alive state shold sum to one  
   2015-11-18  Brouard Nicolas  <brouard@ined.fr>
         * Makefile: *** empty log message ***  
           * imach.c: Summary: Start working on projected prevalences
 2015-09-22  Brouard Nicolas  <brouard@ined.fr>  
   2015-11-17  Brouard Nicolas  <brouard@ined.fr>
         * imach.c:  
         Summary: Adding some overall graph on contribution to likelihood. Might change          * imach.c: Summary: Adding ftolpl parameter
           Author: N Brouard
 2015-09-15  Brouard Nicolas  <brouard@ined.fr>  
           We had difficulties to get smoothed confidence intervals. It was due
         * Makefile: *** empty log message ***          to the period prevalence which wasn't computed accurately. The inner
           parameter ftolpl is now an outer parameter of the .imach parameter
         * imach.c: Summary: 0.98r0          file after estepm. If ftolpl is small 1.e-4 and estepm too,
           computation are long.
         - Some new graphs like suvival functions  
         - Some bugs fixed like model=1+age+V2.          * version.h: *** empty log message ***
   
         * ChangeLog, Makefile: Summary: 0.98r0          * imach.c: Summary: temporary
   
         * CMakeLists.txt: Summary: Some tests for setup.iss  2015-10-27  Brouard Nicolas  <brouard@ined.fr>
   
 2015-09-15  Nicolas J Brouard   <nbrouard@tugault.ined.fr>          * Makefile: *** empty log message ***
   
         *  (Module): 0.98r0 Some new graphs, some bugs fixed: model=1+age+V2. etc          * setup.iss.in: Summary: some new subdirs
   
 2015-08-18  Nicolas J Brouard   <nbrouard@tugault.local>          * imach.c: *** empty log message ***
   
         *  (Module): Adding error when the covariance matrix doesn't contain the exact number of lines required by the model line.          * setup.iss.in:
           Summary: Adding gnuplot 5.1 with bin and etc for pango fonts
 2015-08-03  Nicolas J Brouard   <nbrouard@tugault.ined.fr>  
   2015-10-24  Brouard Nicolas  <brouard@ined.fr>
         *  (Module): Changing Variance of one-step probabilities into Standard deviation (thanks to Yao-Chi Shih)  
           * imach.c: *** empty log message ***
 2014-12-16  Nicolas J Brouard   <nbrouard@tugault.local>  
   2015-10-23  Brouard Nicolas  <brouard@ined.fr>
         * imach.c (Module): Merging 1.61 to 1.162  
           * imach.c:
 2014-09-02  Nicolas J Brouard   <nbrouard@njbrouard.ined.fr>          Summary: 0.98r3 some clarification for graphs on likelihood contributions
   
         * prevlim.h (Module):  2015-10-01  Brouard Nicolas  <brouard@ined.fr>
   
 2014-01-26  Nicolas J Brouard   <nbrouard@ledermann-2.local>          * imach.c: Summary: Some new graphs of contribution to likelihood
   
         * imach.c (Module): Trying to merge old staffs together while being at Tokyo. Not tested...  2015-09-30  Brouard Nicolas  <brouard@ined.fr>
         (Module): Version 0.98nR Running ok, but output format still only works for three covariates.  
           * Makefile:
 2010-04-29  brouard  <brouard@ined.fr>          Summary: Version read from version.h, itself read with cmake
   
         * imach.c (Module): Checking covariates for more complex models          * imach.c: Summary: looking at better estimation of the hessian
         than V1+V2. A lot of change to be done. Unstable.  
           Also a better criteria for convergence to the period prevalence And
 2010-04-26  brouard  <brouard@ined.fr>          therefore adding the number of years needed to converge. (The
           prevalence in any alive state shold sum to one
         * imach.c (Module): merging some libgsl code. Fixing computation  
         of likelione (using inter/intrapolation if mle = 0) in order to          * Makefile: *** empty log message ***
         get same likelihood as if mle=1.  
         Some cleaning of code and comments added.  2015-09-22  Brouard Nicolas  <brouard@ined.fr>
   
 2009-10-29  brouard  <brouard@ined.fr>          * imach.c:
           Summary: Adding some overall graph on contribution to likelihood. Might change
         * imach.c (Module): Now imach stops if date of birth, at least year of birth, is not given. Some cleaning of the code.  
   2015-09-15  Brouard Nicolas  <brouard@ined.fr>
 2006-06-30  Brouard Nicolas  <brouard@localhost>  
           * Makefile: *** empty log message ***
         * imach.c (Module): Clarifications on computing e.j  
           * imach.c: Summary: 0.98r0
 2006-04-28  Brouard Nicolas  <brouard@localhost>  
           - Some new graphs like survival functions
         * imach.c (Module): Yes the sum of survivors was wrong since          - Some bugs fixed like model=1+age+V2.
         imach-114 because nhstepm was no more computed in the age  
         loop. Now we define nhstepma in the age loop.          * ChangeLog, Makefile: Summary: 0.98r0
         (Module): In order to speed up (in case of numerous covariates) we  
         compute health expectancies (without variances) in a first step          * CMakeLists.txt: Summary: Some tests for setup.iss
         and then all the health expectancies with variances or standard  
         deviation (needs data from the Hessian matrices) which slows the  2015-09-15  Nicolas J Brouard   <nbrouard@tugault.ined.fr>
         computation.  
         In the future we should be able to stop the program is only health          *  (Module): 0.98r0 Some new graphs, some bugs fixed: model=1+age+V2. etc
         expectancies and graph are needed without standard deviations.  
   2015-08-18  Nicolas J Brouard   <nbrouard@tugault.local>
 2006-04-04  LIEVRE Agnes  <lievre@PC_00697.ined.fr>  
           *  (Module): Adding error when the covariance matrix doesn't contain the exact number of lines required by the model line.
         * imach.iss (Module):  
   2015-08-03  Nicolas J Brouard   <nbrouard@tugault.ined.fr>
         * imach.c (Module): bugs in evsi + population file added in htm output file  
           *  (Module): Changing Variance of one-step probabilities into Standard deviation (thanks to Yao-Chi Shih)
 2006-03-22  LIEVRE Agnes  <lievre@PC_00697.ined.fr>  
   2014-12-16  Nicolas J Brouard   <nbrouard@tugault.local>
         * imach.c (Module):  
           * imach.c (Module): Merging 1.61 to 1.162
 2006-03-20  Brouard Nicolas  <brouard@localhost>  
   2014-09-02  Nicolas J Brouard   <nbrouard@njbrouard.ined.fr>
         * imach.c (Module): <title> changed, corresponds to .htm file  
         name. <head> headers where missing.          * prevlim.h (Module): 
   
         * Makefile (Module): 0.98g  2014-01-26  Nicolas J Brouard   <nbrouard@ledermann-2.local>
   
         * imach.c (Module): Weights can have a decimal point as for          * imach.c (Module): Trying to merge old staffs together while being at Tokyo. Not tested...
         English (a comma might work with a correct LC_NUMERIC environment,          (Module): Version 0.98nR Running ok, but output format still only works for three covariates.
         otherwise the weight is truncated).  
         Modification of warning when the covariates values are not 0 or  2010-04-29  brouard  <brouard@ined.fr>
         1.  
         Version 0.98g          * imach.c (Module): Checking covariates for more complex models
           than V1+V2. A lot of change to be done. Unstable.
 2006-03-16  LIEVRE Agnes  <lievre@PC_00697.ined.fr>  
   2010-04-26  brouard  <brouard@ined.fr>
         * imach.c (Module): Comments concerning covariates added  
           * imach.c (Module): merging some libgsl code. Fixing computation
         * noreg-setup.iss (Module): Version 0.98f          of likelione (using inter/intrapolation if mle = 0) in order to
           get same likelihood as if mle=1.
         * Makefile (Module): Version 0.98f make _windows=1 imachcyg-setup          Some cleaning of code and comments added.
   
         * imach.c (Module): refinements in the computation of lli if  2009-10-29  brouard  <brouard@ined.fr>
         status=-2 in order to have more reliable computation if stepm is  
         not 1 month. Version 0.98f          * imach.c (Module): Now imach stops if date of birth, at least year of birth, is not given. Some cleaning of the code.
   
 2006-03-15  Brouard Nicolas  <brouard@localhost>  2006-06-30  Brouard Nicolas  <brouard@localhost>
   
         * imach.c (Module): Bug if status = -2, the loglikelihood was          * imach.c (Module): Clarifications on computing e.j
         computed as likelihood omitting the logarithm. Version O.98e  
   2006-04-28  Brouard Nicolas  <brouard@localhost>
 2006-03-14  Brouard Nicolas  <brouard@localhost>  
           * imach.c (Module): Yes the sum of survivors was wrong since
         * imach.c (Module): varevsij Comments added explaining the second          imach-114 because nhstepm was no more computed in the age
         table of variances if popbased=1 .          loop. Now we define nhstepma in the age loop.
         (Module): Covariances of eij, ekl added, graphs fixed, new html link.          (Module): In order to speed up (in case of numerous covariates) we
         (Module): Function pstamp added          compute health expectancies (without variances) in a first step
         (Module): Version 0.98d          and then all the health expectancies with variances or standard
           deviation (needs data from the Hessian matrices) which slows the
 2006-03-06  Brouard Nicolas  <brouard@localhost>          computation.
           In the future we should be able to stop the program is only health
         * imach.c (Module): Variance-covariance wrong links and          expectancies and graph are needed without standard deviations.
         varian-covariance of ej. is needed (Saito).  
   2006-04-04  LIEVRE Agnes  <lievre@PC_00697.ined.fr>
 2006-02-27  Brouard Nicolas  <brouard@localhost>  
           * imach.iss (Module): 
         * imach.c (Module): One freematrix added in mlikeli!  
           * imach.c (Module): bugs in evsi + population file added in htm output file
 2006-02-26  Brouard Nicolas  <brouard@localhost>  
   2006-03-22  LIEVRE Agnes  <lievre@PC_00697.ined.fr>
         * imach.c (Module): Some improvements in processing parameter  
         filename with strsep.          * imach.c (Module): 
   
 2006-02-24  Brouard Nicolas  <brouard@localhost>  2006-03-20  Brouard Nicolas  <brouard@localhost>
   
         * imach.c (Module): Memory leaks checks with valgrind and:          * imach.c (Module): <title> changed, corresponds to .htm file
         datafile was not closed, some imatrix were not freed and on matrix          name. <head> headers where missing.
         allocation too.  
           * Makefile (Module): 0.98g
 2006-02-09  LIEVRE Agnes  <lievre@PC_00697.ined.fr>  
           * imach.c (Module): Weights can have a decimal point as for
         * strsep.c (Module): Inclusion because not in mingw32!!!          English (a comma might work with a correct LC_NUMERIC environment,
           otherwise the weight is truncated).
         * setup.iss.in (Module): IMACHSETUPVERSION added          Modification of warning when the covariates values are not 0 or
           1. 
         * noreg-setup.iss (Module): added to cvs tree          Version 0.98g
   
         * Makefile (Module): IMACHSETUPVERSION added  2006-03-16  LIEVRE Agnes  <lievre@PC_00697.ined.fr>
   
 2006-01-30  BROUARD Nicolas  <brouard@localhost>          * imach.c (Module): Comments concerning covariates added
   
         * Makefile (Module, Module): Latest Makefile          * noreg-setup.iss (Module): Version 0.98f
   
         * imach.c (Module): Back to gnuplot.exe instead of wgnuplot.exe          * Makefile (Module): Version 0.98f make _windows=1 imachcyg-setup
   
 2006-01-27  BROUARD Nicolas  <brouard@localhost>          * imach.c (Module): refinements in the computation of lli if
           status=-2 in order to have more reliable computation if stepm is
         * noreg-setup.iss (Module): ADDED          not 1 month. Version 0.98f
   
 2006-01-24  BROUARD Nicolas  <brouard@localhost>  2006-03-15  Brouard Nicolas  <brouard@localhost>
   
         * imach.c (Module): Comments (lines starting with a #) are allowed in data.          * imach.c (Module): Bug if status = -2, the loglikelihood was
           computed as likelihood omitting the logarithm. Version O.98e
 2005-10-25  Nicolas Brouard  <brouard@dhcp171.recherche.ined.fr>  
   2006-03-14  Brouard Nicolas  <brouard@localhost>
         * Makefile (Module): Added Imach98.pmsp and howto crete a dmg  
           * imach.c (Module): varevsij Comments added explaining the second
         * createdmg.sh (Module): Creates a dmg disk for MaC OS/X          table of variances if popbased=1 .
           (Module): Covariances of eij, ekl added, graphs fixed, new html link.
 2005-09-30    <lievre@PC_00595>          (Module): Function pstamp added
           (Module): Version 0.98d 
         * imach.c (Module): sump fixed, loop imx fixed, and simplifications.  
         (Module): If the status is missing at the last wave but we know  2006-03-06  Brouard Nicolas  <brouard@localhost>
         that the person is alive, then we can code his/her status as -2  
         (instead of missing=-1 in earlier versions) and his/her          * imach.c (Module): Variance-covariance wrong links and
         contributions to the likelihood is 1 - Prob of dying from last          varian-covariance of ej. is needed (Saito).
         health status (= 1-p13= p11+p12 in the easiest case of somebody in  
         the healthy state at last known wave). Version is 0.98  2006-02-27  Brouard Nicolas  <brouard@localhost>
   
 2004-05-20  Brouard Nicolas  <brouard@localhost>          * imach.c (Module): One freematrix added in mlikeli!
   
         * imach.c (Repository):  2006-02-26  Brouard Nicolas  <brouard@localhost>
         Agnes added a direct estimation of mortality (without the need of  
         computing period prevalence and differential mortality). Thus here          * imach.c (Module): Some improvements in processing parameter
         is version 0.97a which has been distributed to some people at          filename with strsep.
         REVES 16 in Brugge using an Inno setup.exe for PCs. Estimates of  
         mortality using covariates is not done today. Estimating direct  2006-02-24  Brouard Nicolas  <brouard@localhost>
         mortality is a very different process because it doesn't need  
         interpolation because it is easy to get the lx from the force of          * imach.c (Module): Memory leaks checks with valgrind and:
         the mortality mux in the simplest case as for a Gompertz (log mux          datafile was not closed, some imatrix were not freed and on matrix
         = a + b*x . But we have been able to incorporate the new code          allocation too.
         within former imach program (0.96d) without deteriorating too much  
         the understanding of the program.  2006-02-09  LIEVRE Agnes  <lievre@PC_00697.ined.fr>
   
 2003-06-25    <brouard@BROUARD>          * strsep.c (Module): Inclusion because not in mingw32!!!
   
         * imach.c (Module): On windows (cygwin) function asctime_r doesn't          * setup.iss.in (Module): IMACHSETUPVERSION added
         exist so I changed back to asctime which exists.  
         (Module): Version 0.96b          * noreg-setup.iss (Module): added to cvs tree
   
 2003-06-24    <brouard@BROUARD>          * Makefile (Module): IMACHSETUPVERSION added
   
         * imach.c (Module): Some bugs corrected for windows. Also, when  2006-01-30  BROUARD Nicolas  <brouard@localhost>
         mle=-1 a template is output in file "or"mypar.txt with the design  
         of the covariance matrix to be input.          * Makefile (Module, Module): Latest Makefile
   
 2003-06-25  Brouard Nicolas  <brouard@homebrou>          * imach.c (Module): Back to gnuplot.exe instead of wgnuplot.exe
   
         * imach.c (Repository): Duplicated warning errors corrected.  2006-01-27  BROUARD Nicolas  <brouard@localhost>
         (Repository): Elapsed time after each iteration is now output. It  
         helps to forecast when convergence will be reached. Elapsed time          * noreg-setup.iss (Module): ADDED
         is stamped in powell.  We created a new html file for the graphs  
         concerning matrix of covariance. It has extension -cov.htm.  2006-01-24  BROUARD Nicolas  <brouard@localhost>
   
 2003-06-23  Brouard Nicolas  <brouard@homebrou>          * imach.c (Module): Comments (lines starting with a #) are allowed in data.
   
         * imach.c (Repository): Create a sub-directory where all the secondary files are. Only imach, htm, gp and r(imach) are on the main directory. Correct time and other things.  2005-10-25  Nicolas Brouard  <brouard@dhcp171.recherche.ined.fr>
   
 2003-06-18  Brouard Nicolas  <brouard@homebrou>          * Makefile (Module): Added Imach98.pmsp and howto crete a dmg
   
         * imach.c (Repository): Suppress abusive calls to append to file html (solution was to put fichtm as a global variable. Version 0.96          * createdmg.sh (Module): Creates a dmg disk for MaC OS/X
   
 2003-06-17  Brouard Nicolas  <brouard@homebrou>  2005-09-30    <lievre@PC_00595>
   
           * imach.c (Module): sump fixed, loop imx fixed, and simplifications.
         * imach.c (Repository): Check when date of death was earlier that          (Module): If the status is missing at the last wave but we know
         current date of interview. It may happen when the death was just          that the person is alive, then we can code his/her status as -2
         prior to the death. In this case, dh was negative and likelihood          (instead of missing=-1 in earlier versions) and his/her
         was wrong (infinity). We still send an "Error" but patch by          contributions to the likelihood is 1 - Prob of dying from last
         assuming that the date of death was just one stepm after the          health status (= 1-p13= p11+p12 in the easiest case of somebody in
         interview.          the healthy state at last known wave). Version is 0.98 
         (Repository): Because some people have very long ID (first column)  
         we changed int to long in num[] and we added a new lvector for  2004-05-20  Brouard Nicolas  <brouard@localhost>
         memory allocation. But we also truncated to 8 characters (left  
         truncation)          * imach.c (Repository): 
           Agnes added a direct estimation of mortality (without the need of
         (Repository): No more line truncation errors.          computing period prevalence and differential mortality). Thus here
           is version 0.97a which has been distributed to some people at
 2003-06-14  Brouard Nicolas  <brouard@homebrou>          REVES 16 in Brugge using an Inno setup.exe for PCs. Estimates of
           mortality using covariates is not done today. Estimating direct
         * imach.c (Repository): Add of a routine likelione (likelihood          mortality is a very different process because it doesn't need
         only once) which prints on a text file          interpolation because it is easy to get the lx from the force of
         (ilk) the contributions to the likelihood for each          the mortality mux in the simplest case as for a Gompertz (log mux
         individual/wave.          = a + b*x . But we have been able to incorporate the new code
           within former imach program (0.96d) without deteriorating too much
 2003-06-13  Brouard Nicolas  <brouard@homebrou>          the understanding of the program. 
         * imach.c (Repository): Replace "freqsummary" at a correct  
         place. It differs from routine "prevalence" which may be called  2003-06-25    <brouard@BROUARD>
         many times. Probs is memory consuming and must be used with  
         parcimony.          * imach.c (Module): On windows (cygwin) function asctime_r doesn't
           exist so I changed back to asctime which exists.
 2003-06-17    <brouard@BROUARD>          (Module): Version 0.96b
   
         * timeval.h (Module): Added included file to make use of  2003-06-24    <brouard@BROUARD>
         gettimeofday working on win32 with cygwin.  
           * imach.c (Module): Some bugs corrected for windows. Also, when
 2003-05-16  Brouard Nicolas  <brouard@brouard>          mle=-1 a template is output in file "or"mypar.txt with the design
         * imach.c (Module): Insert of a warning if the delay between two          of the covariance matrix to be input.
         waves is negative.  
   2003-06-25  Brouard Nicolas  <brouard@homebrou>
         * imach.c (Module):  
           * imach.c (Repository): Duplicated warning errors corrected.
 2003-05-03    <brouard@BROUARD>          (Repository): Elapsed time after each iteration is now output. It
           helps to forecast when convergence will be reached. Elapsed time
         * imach.c: Some cleaning          is stamped in powell.  We created a new html file for the graphs
           concerning matrix of covariance. It has extension -cov.htm.
 2003-03-28    <brouard@BROUARD>  
         * imach.c (Module): In version up to 0.92 likelihood was computed  2003-06-23  Brouard Nicolas  <brouard@homebrou>
         as if date of death was unknown. Death was treated as any other  
         health state: the date of the interview describes the actual state          * imach.c (Repository): Create a sub-directory where all the secondary files are. Only imach, htm, gp and r(imach) are on the main directory. Correct time and other things.
         and not the date of a change in health state. The former idea was  
         to consider that at each interview the state was recorded  2003-06-18  Brouard Nicolas  <brouard@homebrou>
         (healthy, disable or death) and IMaCh was corrected; but when we  
         introduced the exact date of death then we should have modified          * imach.c (Repository): Suppress abusive calls to append to file html (solution was to put fichtm as a global variable. Version 0.96
         the contribution of an exact death to the likelihood. This new  
         contribution is smaller and very dependent of the step unit  2003-06-17  Brouard Nicolas  <brouard@homebrou>
         stepm. It is no more the probability to die between last interview  
         and month of death but the probability to survive from last  
         interview up to one month before death multiplied by the          * imach.c (Repository): Check when date of death was earlier that
         probability to die within a month. Thanks to Chris          current date of interview. It may happen when the death was just
         Jackson for correcting this bug.  Former versions increased          prior to the death. In this case, dh was negative and likelihood
         mortality artificially. The bad side is that we add another loop          was wrong (infinity). We still send an "Error" but patch by
           assuming that the date of death was just one stepm after the
           interview.
         which slows down the processing. The difference can be up to 10%          (Repository): Because some people have very long ID (first column)
           we changed int to long in num[] and we added a new lvector for
           memory allocation. But we also truncated to 8 characters (left
         lower mortality.          truncation)
   
           (Repository): No more line truncation errors.
   
   2003-06-14  Brouard Nicolas  <brouard@homebrou>
   
 2002-05-30    <brouard@BROUARD>          * imach.c (Repository): Add of a routine likelione (likelihood
           only once) which prints on a text file
           (ilk) the contributions to the likelihood for each
           individual/wave.
   
   2003-06-13  Brouard Nicolas  <brouard@homebrou>
         *          * imach.c (Repository): Replace "freqsummary" at a correct
           place. It differs from routine "prevalence" which may be called
           many times. Probs is memory consuming and must be used with
           parcimony.
   
   2003-06-17    <brouard@BROUARD>
         * imach.c (Module): Add correlation matrix of one-step  
           * timeval.h (Module): Added included file to make use of
           gettimeofday working on win32 with cygwin.
         probabilities and covariance matrix  
   2003-05-16  Brouard Nicolas  <brouard@brouard>
           * imach.c (Module): Insert of a warning if the delay between two
           waves is negative.
   
           * imach.c (Module): 
   
   2003-05-03    <brouard@BROUARD>
   
           * imach.c: Some cleaning
   
   2003-03-28    <brouard@BROUARD>
           * imach.c (Module): In version up to 0.92 likelihood was computed
           as if date of death was unknown. Death was treated as any other
           health state: the date of the interview describes the actual state
           and not the date of a change in health state. The former idea was
           to consider that at each interview the state was recorded
           (healthy, disable or death) and IMaCh was corrected; but when we
           introduced the exact date of death then we should have modified
           the contribution of an exact death to the likelihood. This new
           contribution is smaller and very dependent of the step unit
           stepm. It is no more the probability to die between last interview
           and month of death but the probability to survive from last
           interview up to one month before death multiplied by the
           probability to die within a month. Thanks to Chris
           Jackson for correcting this bug.  Former versions increased
           mortality artificially. The bad side is that we add another loop
           which slows down the processing. The difference can be up to 10%
           lower mortality.
   
   2002-05-30    <brouard@BROUARD>
           * 
           * imach.c (Module): Add correlation matrix of one-step
           probabilities and covariance matrix
   
   
   
   
   
Removed from v.1.43  
changed lines
  Added in v.1.54

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