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st: Sampling for proportion: characteristic of interest

From   "Ilian, Henry (ACS)" <>
To   "''" <>
Subject   st: Sampling for proportion: characteristic of interest
Date   Fri, 24 Aug 2012 12:35:05 -0400

I need to take a quality-control sample for a case-reading study. A random sample of about 600 cases will be drawn and read, and I need a sample of those to be read by a second reader. The case-reading instrument has approximately 100 questions--the final number hasn't been determined yet. The response choices mostly form ordinal scales, although a few will be nominal, hence I'll be sampling for proportion.

Everything I can find on sampling for proportion only considers the proportions for a single characteristic of interest. I have 100+ characteristics with different expected proportions. How do I approach this problem?

Many thanks,

Henry Ilian

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