Reporting of sample size calculations in analgesic clinical trials: ACTTION systematic review.


UNLABELLED Sample size calculations determine the number of participants required to have sufficiently high power to detect a given treatment effect. In this review, we examined the reporting quality of sample size calculations in 172 publications of double-blind randomized controlled trials of noninvasive pharmacologic or interventional (ie, invasive) pain… (More)
DOI: 10.1016/j.jpain.2014.11.010


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