Differences in result measures in both study designs
| Cross–sectional (prevalence) | Retrospective cohort (cumulative incidence) | |
| Patients with adverse events (AEs) | 1191/11379=10.47% (95% CI 9.90% to 11.03%) | 215/1088=19.76% (95% CI 17.35% to 22.17%) |
| Total number of AEs | 1349/11379=11.85% (95% CI 11.26% to 12.46%) | 314/1088=28.86% (95% CI 26.12% to 31.61%) |