Sensitivity analyses for the 1-month prevalence of self-reported ADEs and preventable ADEs, varying the denominator.

ADE = adverse drug event; CI = confidence interval.aAs one person could have multiple ADEs, the combined prevalence is lower than the sum of the prevalences of the ADE categories.bSelf-reported use of prescription, non-prescription or herbal drugs during the 1-month study period for which the respondents reported ADEs.