Apology for reposting, but the format of earlier message got
distorted; hopefully this time it will be readable:
From: wilds...@hotmail.com
To: r-help@r-project.org
Subject: Longitudinal data with non-randomized subjects
Date: Sun, 1 May 2011 00:34:08 -0700
Dear List,
I have a theoretical quest
Dear List,
I have a theoretical question related to epidemiological data analysis:
If the treatment status (tx = 0,1) changes over time for the patients in a
non-randomized cohort, is there a way to estimate the treatment effect?
(i.e., after joining the study, some patients may have to wait fo
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