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Cluster randomised trials in maternal and child health: implications for power and sample size
BACKGROUND—Interventions based in the community can be evaluated by randomising clusters, such as general practices, rather than individuals, as in conventional randomised trials. This increases the sample size needed because of intracluster correlation. AIMS—To estimate sample size requirements for...
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| Main Authors: | , , |
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| Format: | Artigo |
| Jezik: | Inglês |
| Izdano: |
BMJ Group
2000
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| Teme: | |
| Online dostop: | https://ncbi.nlm.nih.gov/pmc/articles/PMC1718186/ https://ncbi.nlm.nih.gov/pubmed/10630921 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1136/adc.82.1.79 |
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