Datasets

2 datasets

HealthData.Gov

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…

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Updated Oct 29, 2026

HealthData.Gov

Pooling data for Number Needed to Treat: no problems for apples

Objective To consider the problem of the calculation of number needed to treat (NNT) derived from risk difference, odds ratio, and raw pooled events shown to give different results using data from a review of nursing…

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Updated Oct 29, 2026