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Re: st: drawing two stage random samples
From
Steve Samuels <[email protected]>
To
[email protected]
Subject
Re: st: drawing two stage random samples
Date
Tue, 29 May 2012 10:59:09 -0400
Without knowing details about your population and study goals, it's difficult to give advice. I can say right now that, under the best of circumstances, the design you propose studies too many patients.
Steve
[email protected]
On May 29, 2012, at 7:34 AM, Shehzad Ali wrote:
Hi listers,
I am looking to draw a random sample from my dataset that has nested levels, i.e. patients (pt_id) nested within physicians (doc-id). I would like to randomly sample physicians (say 20%) and then randomly sample patients (say 20%) from the randomly selected physicians. The data is in long form with unique pt_id that are nested within doc_id.
Any advice would be appreciated.
Many thanks
Shehzad
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