Table 3

Characteristics of patients with and without adverse drug reactions (ADRs)

ADR groupNon-ADR groupTotal
Number of admissions2189691187
Age, mean (SD)73.2 (14.5)66.7 (19.2)67.9 (18.6)
Male (%)106 (48.6)455 (47.0)561 (47.3)
Number of medicines, mean (SD)10.5 (4.6)7.8 (5.1)8.3 (5.1)
Polypharmacy (%)199 (91.3)706 (72.9)905 (76.2)
Number of comorbidities, mean (SD)6.1 (3.0)5.2 (3.3)5.4 (3.2)
Multimorbid (%)99.190.391.9
Liver impairment* (%)6.92.83.5
Renal impairment† (%)11.06.87.6
  • *Liver impairment defined as chronic liver disease.

  • †Renal impairment defined as chronic kidney disease stage IV or V.