Patient characteristics (n=48) (created by the authors)
| Variable | Value |
| Age (years; median (P25–P75)) | 76 (72–81) |
| ≥70–≤80 years (n, (%)) | 34 (71) |
| >80–≤90 years (n, (%)) | 13 (27) |
| >90 years (n, (%)) | 1 (2) |
| Sex (n, (%)) | |
| Female | 23 (48) |
| Male | 25 (52) |
| No. of medications on admission (median (P25–P75)) | 10 (7–14) |
| Total no. of medication changes proposed during admission (median (P25–P75); (range)) | 4 (2–6; 1–13) |
| n (%) of patients with ≥1–≤4 changes | 29 (60) |
| n (%) of patients with ≥5–<10 changes | 17 (35) |
| n (%) of patients with ≥10–≤13 changes | 2 (4) |
| Proposed medication stops | |
| (median (P25–P75); (range)) | 1 (0–2; 0–10) |
| Proposed medication starts | |
| (median (P25–P75); (range)) | 1 (1–2; 0–10) |
| Proposed medication modifications | |
| (median (P25–P75); (range)) | 0 (0–1; 0–3) |
| Country (local language, n, (%)) | |
| Belgium (French) | 15 (31) |
| Ireland (English) | 7 (15) |
| Switzerland (Swiss-German) | 11 (23) |
| The Netherlands (Dutch) | 15 (31) |
| OPERAM study arm (n, (%)) | |
| Control arm | 21 (44) |
| Intervention arm | 27 (56) |
| Ward specialty (n, (%)) | |
| Medical ward | 36 (75) |
| Surgical ward | 12 (25) |
| Length of stay (days; median (P25–P75)) | 9 (7–11) |
| Educational level (n, (%)) | |
| Less than high school completed | 7 (15) |
| High school degree | 23 (48) |
| Postsecondary degree | 18 (37) |
| Place of residence (n, (%)) | |
| Home | 45 (94) |
| Nursing home | 3 (6) |
| Interview with (n, (%)) | |
| Patient | 31 (65) |
| Patient and companion | 17 (35) |