Prevalence estimation from pooled samples |
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| Authors: | J M Sacks S R Bolin S V Crowder |
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| Institution: | National Animal Disease Center, USDA, Agricultural Research Service, Ames, IA 50010. |
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| Abstract: | Under certain conditions, prevalence can be estimated by testing samples from individual members or by pooling samples from members into a group and by testing the sample from the group as a single unit. Pooled tests are more accurate than individual tests when P is less than 10%. Optimal group size is 1.6/P. Efficiency decreases slowly with suboptimal size and rapidly with overly large size. |
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