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Table 1 Characteristics of the study participants, by potentially inappropriate medication (PIM) exposure

From: Costs of potentially inappropriate medication use in residential aged care facilities

Characteristic All participants (n = 541) Participants prescribed at least one PIM (n = 434) Participants not prescribed a PIM (n = 99) P-value
Age, mean (SD) 85.5 (8.5) 84.9 (8.9) 87.9 (6.4) 0.005
Female, n (%) 403 (74.5) 323 (74.4) 77 (77.8) 0.487
Married, n (%) 137 (25.3) 111 (25.7) 24 (24.2) 0.765
Modified Barthel Index, median (IQR) 35.0 (9.0–71.0) 37.0 (10.0–72.0) 25.0 (6.0–62.0) 0.060
Number of comorbidities, mean (SD) 3.7 (1.4) 3.7 (1.4) 3.5 (1.5) 0.348
Neuropsychiatric Inventory, median (IQR) 7.0 (3.0–12.0) 7.0 (3.0–13.0) 6.0 (3.0–11.0) 0.152
Dementia diagnosis, n (%) 348 (64.3) 265 (62.1) 77 (78.6) 0.002
PASCog Score, median (IQR) 15.0 (6.0–21.0) 14.2 (5.0–21.0) 18.0 (9.0–21.0) 0.050
Residing in a home-like model of residential care, n (%) 120 (22.2) 89 (20.5) 31 (31.3) 0.020
  1. Based on the standard list of PIMs from the Beers Criteria for all older adults, not including the additional list of PIMs for older adults with dementia
  2. Abbreviations: IQR Inter-quartile range, PAS-Cog Psychogeriatric Assessment Scale – Cognitive Impairment Scale
  3. P values are from chi-squared or Mann-Whitney tests