Date: Wed, 2 Jul 2003 09:51:57 +0100
From: "roger webb" <firstname.lastname@example.org>
Subject: st: re. case control design & analysis
I have a case control study in which cases were inpatient suicides
and eligible controls were alive and in inpatient care on the index
date (i.e. the date of death of the corresponding case). There is no
matching for age, sex, diagnosis, or any other explanatory variable.
I'd greatly appreciate advice on the following two issues:
1) Is this a matched design, or does the single criterion for
selection of controls (i.e. alive on index date) simply constitue
sampling from the risk set (as in Clayton & Hills, 1993)? Therefore
should I analyse the data using conditional logistic regression or
just use the simple 'logit' / 'logistic' commands?