RESULTS: In total, 132 patients were analyzed and DRPs were isolated in 37.9%. The most common organisms included Pseudomonas aeruginosa (22.7%), Streptococcus pneumoniae (15.2%), and Klebsiella pneumonia (13.6%). Independent risk factors for the presence of DRPs included nonambulatory status (OR, 7.06; 95% CI, 2.49- 19.98; p<0.05), previous episode of DRPs (OR, 6.08; 95% CI, 2.32-15.95; p<0.05), and immunosuppression (OR, 19.22; 95% CI, 5.60-66.01; p<0.05). Based on the logistic regression, we created a scoring model using the cumulative number of the risk factors, resulting in a maximum of 3 possible points. The AUROC for the scoring model was 0.83 that was better than 8 clinical prediction models. DRPs were associated with hospital-free days (p<0.05) and ventilator-free days (p<0.05), but not ICU-free days (p=0.17) or death (p=0.24).