Effect of age, sex, and morbidity count on trial attrition: meta-analysis of individual participant level data from phase 3/4 industry funded clinical trials Citation: Lees JS, Hanlon P, Butterly EW, et al. BMJ Med. 2022 Sep 1;1(1):e000217. PMID: 36936559; PMCID: PMC9978693.
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