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Power for T-test comparisons of unbalanced cluster exposure studies
Studies of individuals sampled in unbalanced clusters have become common in health services and epidemiological research, but available tools for power/sample size estimation and optimal design are currently limited. This paper presents and illustrates power estimation formulas for t-test comparison...
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| Hovedforfatter: | |
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| Format: | Artigo |
| Sprog: | Inglês |
| Udgivet: |
Springer-Verlag
2002
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| Fag: | |
| Online adgang: | https://ncbi.nlm.nih.gov/pmc/articles/PMC3456800/ https://ncbi.nlm.nih.gov/pubmed/12023503 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1093/jurban/79.2.278 |
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