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st: Carry forward an observation within a time frame


From   "Benigno Rodriguez, MD" <[email protected]>
To   [email protected]
Subject   st: Carry forward an observation within a time frame
Date   Wed, 9 Oct 2013 22:36:03 -0400

Dear David:

With your approach, however, if there are two consecutive non-missing CD4 values followed by a "spell" of missing ones, wouldn't the earlier non-missing value be selected as the "seed", instead of the closest to the missing values?

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