Table 5. Logistic regression analysis of use of potentially inappropriate medications.
| Variables | OR | CI 95% | P* |
|---|---|---|---|
| Length of stay | 1.074 | 1.020–1.131 | 0.007 |
| Number. of drugs | 1.173 | 1.059–1.299 | 0.002 |
| PDDIs ≥ 10 pairs | 2.430 | 1.189–4.965 | 0.015 |
OR = odds ratio; CI = confidence interval, PDDIs = potential drug-drug interactions.
P value obtained using the multiple logistic regression model.