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Cluster randomization: a trap for the unwary.

Controlled trials that randomize by practice can provide robust evidence to inform patient care. However, compared with randomizing by each individual patient, this approach may have substantial implications for sample size calculations and the interpretation of results. An increased awareness of th...

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Autori principali: Underwood, M, Barnett, A, Hajioff, S
Natura: Artigo
Lingua:Inglês
Pubblicazione: 1998
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Accesso online:https://ncbi.nlm.nih.gov/pmc/articles/PMC1410011/
https://ncbi.nlm.nih.gov/pubmed/9624757
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