Predictors of DDIs
In the multivariate binary logistic regression analysis, the presence of DDIs at MM was 7.2 (95% confidence interval: 3.89 – 13.33) times greater in patients prescribed >6 drugs and 3.9 (95% CI: 2.21 – 7.19) times greater in patients with an ICU stay >3 days. In KTH, the presence of DDIs was 2.8 (95% CI: 1.49 – 5.23) times greater in patients prescribed 6 or more drugs, while stay in the ICU had no significant effect (p>0.05). Age and gender of the patients had no effect on the presence of DDIs in either hospital(Table 3) .