Admissions caused by adverse drug events to internal medicine and emergency departments in hospitals: a longitudinal population-based study.

Objective: To estimate incidence rates of drug-related hospitalizations (DRHs) in a longitudinal population-based study with prospective event assessment.

Design: Cohort study and time-trend analysis.

Setting: All departments of internal medicine and emergency departments in the urban regions of Jena and Rostock, Germany, serving about 520,000 residents.