“…9,10 The occurrence of AEs is associated with patient and health care utilization characteristics. 9,[11][12][13][14][15][16][17][18][19][20] Such factors include patients' age, sex, disease conditions including severity and comorbidity, type of admission, clinical department, treatment by multiple specialties, and length of hospital stay. For instance, patients older than 35 years had increased risk of AEs, 12 and those with comorbidities had a higher incidence of AEs.…”