Table 5.

Multiple logistic regression analysis to identify predictors of inappropriate drug use

Variable	Odds ratio	95%CI	P value	Correlation coefficient*
Psychotropic drug use	1.528	1.133 – 2.059	0.005	0.156
Medication cost per day**	1.172	1.011 – 1.360	0.036	0.213
Number of medications per day	1.141	1.075 – 1.211	0.000	0.268
Age	0.981	0.965 – 0.998	0.029	-0.124

* The Pearson's bivariate correlation coefficients.

** Cost of medication per day has been converted to natural logs.