Table 1. General patients characteristics attendance in primary care.
| Variable | Frequency (%) |
| Gender | |
| Female | 545 (65.9) |
| Male | 282 (34.1) |
| Age (mean ± SD) | 64.1±10.6 |
| 45–59 | 298 (36.0) |
| 60–69 | 282 (34.1) |
| 70–79 | 172 (20.8) |
| ≥80 | 75 (9.1) |
| Drugs (mean ± SD) | 4.4±1.8 |
| 2 | 109 (13.2) |
| 3–4 | 361 (43.7) |
| 5–6 | 245 (29.6) |
| >7 | 112 (13.5) |
| Number of DDIs a per patient (mean ± SD) | 2.5±1.9 |
| 1 | 203 (39.0) |
| 2 | 117 (22.5) |
| 3 | 96 (18.4) |
| 4–5 | 64 (12.3) |
| 6–14 | 41 (7.8) |
| Number of major DDIs per patient (mean ± SD) | 1.2±0.5 |
| 1 | 81 (81.0) |
| 2 | 16 (16.0) |
| 3 | 3 (3.0) |
a
Drug-drug interaction.