Factor associations with PIM prescriptions based on all five Beers criteria categories (n=1600)
| Crude OR (95% CI) | Adjusted OR (95% CI) | P value (Wald’s test) | |
| Health coverage (ref.=universal coverage) | 0.298 | ||
| Government | 1.69 (0.63 to 4.55) | 0.96 (0.75 to 1.23) | 0.727 |
| Cash | 0.82 (0.44 to 1.51) | 0.70 (0.34 to 1.45) | 0.336 |
| State enterprise officer | 1.90 (0.72 to 4.98) | 2.59 (0.88 to 7.57) | 0.083 |
| Social security scheme | 1.69 (0.63 to 4.55) | 1.56 (0.51 to 4.76) | 0.434 |
| Gender: female | 1.14 (0.92 to 1.4) | 1.22 (0.98 to 1.52) | 0.069 |
| Age | 1.02 (1.01 to 1.04) | 1.02 (1.00 to 1.03) | 0.053 |
| Doctor: staff (compare with trainee doctor) | 1.77 (1.30 to 2.41) | 1.84 (1.33 to 2.54) | <0.001 |
| Number of underlying diseases | 1.55 (1.38 to 1.73) | 1.59 (1.42 to 1.79) | <0.001 |
| Number of clinic visits for follow-up | 0.98 (0.85 to 1.11) | 0.88 (0.76 to 1.01) | 0.067 |
| Diagnosis: presenting with acute illness (compare with follow-up only) | 1.54 (1.25 to 1.88) | 1.58 (1.28 to 1.94) | <0.001 |
PIM, potentially inappropriate medications.