title: Numbers needed to treat derived from meta-analysis. Using patient years may also be misleading.
authors.forename: K
authors.initials: K
authors.lastname: Hopayian
authors.forename: J
authors.initials: J
authors.lastname: McGough
mesh_terms: D002986:Clinical Trials as Topic; D015201:Meta-Analysis as Topic; D018401:Sample Size; D013997:Time Factors