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st: dates

From   P chrisman <>
Subject   st: dates
Date   Fri, 17 Aug 2007 06:14:36 -0700

Dear List,

I have a variable "exitdate" that is the last clinic visit for each subject; it is formatted as %dD_m_Y_. I need to change all last visit dates recorded in 2006 to Dec 31, 2005. Any help would be greatly appreciated. Also if someone could point me towards a user friendly reference for survival analysis that would also be greatly appreciated.
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