--- imach/src/ChangeLog	2006/04/28 17:25:08	1.30
+++ imach/src/ChangeLog	2009/07/06 08:13:45	1.31
@@ -1,8 +1,19 @@
+2006-06-30  Brouard Nicolas  <brouard@localhost>
+
+	* imach.c (Module): Clarifications on computing e.j
+
 2006-04-28  Brouard Nicolas  <brouard@localhost>
 
 	* imach.c (Module): Yes the sum of survivors was wrong since
 	imach-114 because nhstepm was no more computed in the age
 	loop. Now we define nhstepma in the age loop.
+	(Module): In order to speed up (in case of numerous covariates) we
+	compute health expectancies (without variances) in a first step
+	and then all the health expectancies with variances or standard
+	deviation (needs data from the Hessian matrices) which slows the
+	computation.
+	In the future we should be able to stop the program is only health
+	expectancies and graph are needed without standard deviations.
 
 2006-04-04  LIEVRE Agnes  <lievre@PC_00697.ined.fr>