1-month prevalence of self-reported ADEs and preventable ADEs, by ADE category and age group (n = 7099).

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.bFor testing the statistical significance between all three age groups using χ2 test, with the exception of using Fisher’s exact test for drug intoxications from overdose due to low number of cases.cNon-significant difference between all the three age groups.dSignificant difference between all three age groups; for all pairwise age group comparisons peSignificant difference between all three age groups; for a pairwise comparison 18–44 vs. ≥65 years p0.05.fSignificant difference between all three age groups; for pairwise comparisons 18–44 vs. ≥65 years and 45–64 vs. ≥65 years p0.05.