Table 4.

Multivariate logistic regression for variables significantly associated with prescribing antipsychotic combination

Variable	B	p-value	Odds ratio with 95% CI
Smoker	0.181	0.661	1.199 (0.534-2.692)
Duration of psychiatric illness > 10 years	−0.435-	0.327	0.647 (0.271-1.545)
Number of psychiatric hospitalization ≥ 2	0.614	0.229	1.849 (0.679-5.034)
Use of depot antipsychotic agents	1.270	0.002	3.560 (1.572-8.061)
Use of anticholinergic agents	1.336	0.005	3.804 (1.511-9.578)
Total CPZeq	0.010	<0.001	1.010 (1.007-1.013)

Abbreviations: CI confidence interval, β coefficient of predictor variables, CPZeq Chlorpromazine Dose Equivalencies.