Table 5.

Influence of different variables on the number of potentially inappropriate medications, evaluated through multiple linear regression (Number of PIMs; R²=0.309)

Variable	beta value (95% confidence interval)	standard error	p-value
Age	-0.019 (-0.045 a 0.007)	0.013	0.152
Hospital length of stay	0.002 (-0.005 a 0.009)	0.004	0.648
ICU length of stay	0.082 (0.051 a 0.112)	0.015	< 0.001
Days of delirium	0.103 (-0.007 a 0.213)	0.056	0.067
Total number of drugs	0.167 (0.109 a 0.225)	0.029	< 0.001
Number of comorbidities	0.080 (-0.028 a 0.188)	0.055	0.145

PIM, potentially inappropriate medications; ICU, intensive care unit