From e70901643e9e0e32a9ac8cbda3de035c36897aa9 Mon Sep 17 00:00:00 2001 From: "N. Brouard" Date: Wed, 9 Apr 2003 13:22:39 +0000 Subject: [PATCH] *** empty log message *** --- src/ChangeLog | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 src/ChangeLog diff --git a/src/ChangeLog b/src/ChangeLog new file mode 100644 index 0000000..747e6ec --- /dev/null +++ b/src/ChangeLog @@ -0,0 +1,27 @@ +2003-03-28 + + * 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 + + * + + * imach.c (Module): Add correlation matrix of one-step + probabilities and covariance matrix + -- 2.43.0