search for: tp25881478p25893488

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2009 Oct 13
1
Time Dependent Cox Model
I am having trouble formatting some survival data to use in a time dependent cox model. My time dep. variable is habitat and I have it recorded for every day (with some NAs). I think it is working properly except for calculating the death.time. This column should be 1s or 0s and as I have it only produces 0s. Any help will be greatly appreciated.