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sunnyleaf (leaf) 于 (Wed May 7 21:50:01 2008) 提到:
My question is when I pull the data for covariates in survival modeling,
should I only pull the covariates value for each individuals before the
origin of time I chose since survival analysis usually consider the
prospective followup or I can pull the covariates during the followup period
? Thanks.
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edition (额滴神) 于 (Thu May 8 09:39:38 2008) 提到:
there are bas
