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Simpson's paradox and calculation of number needed to treat from meta-analysis
BACKGROUND: Calculation of numbers needed to treat (NNT) is more complex from meta-analysis than from single trials. Treating the data as if it all came from one trial may lead to misleading results when the trial arms are imbalanced. DISCUSSION: An example is shown from a published Cochrane review...
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| Formato: | Texto |
| Lenguaje: | English |
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BioMed Central
2002
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| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC65632/ https://www.ncbi.nlm.nih.gov/pubmed/11860604 http://dx.doi.org/10.1186/1471-2288-2-1 |