[R] case-cohort sampling
stecalza at tiscali.it
Thu May 23 09:22:50 CEST 2002
I've a dataframe with about 46000 women with about 500 cases (cancers). I
want to define a case-cohort sampling scheme, matching by age and hospital
centre. Is there anyone who has already written a code for that? It should
be something similar to the stcacoh macro in Stata.
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