Drug Utilization, Anticholinergic Burden and Predictors of Length of Stay in a Psychiatric Hospital: A Retrospective Observational Study.

The mean age of the population was 38.65 ± 13.86 years, and 62.1% were male.

Potential drug-drug interactions were identified in 88.9% of patients, with a significantly higher prevalence in those with polypharmacy.

Mean ACB and ADS scores were high at 5.56 ± 3.32 and 4.15 ± 2.79, respectively.

While age was also statistically significant (IRR = 1.006, 95% CI: 1.001-1.012, p = 0.019), its clinical impact was minimal, representing only a 0.6% increase in LOS per year.