Article
A model-based 'varimax' sampling strategy for a heterogeneous population.
Annals of human biology - 1 Jan 2000
Akram Nuzhat A, Farooqi Shakeel R
Abstract excerpt
BACKGROUND AND AIMS: Sampling strategies are planned to enhance the homogeneity of a sample, hence to minimize confounding errors. A sampling strategy was developed to minimize the variation within population groups. Karachi, the largest urban agglomeration in Pakistan, was used as a model population. SUBJECTS AND METHODS: Blood groups ABO and Rh factor were determined for 3000 unrelated individuals selected...
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