Table 6.

Risk factors for ADRs assessed by multivariate analysis

Covariate		HR (95% CI)	P -value
Age on admission (in years)		1.06 (1.04 to 1.07)	<0.001
Gender	Female	1	0.301
	Male	0.93 (0.80 to 1.08)
Number of drugs		1.25 (1.22 to 1.28)	<0.001
Received a GA	No	1	<0.001
	Yes	6.38 (5.30 to 7.68)
Oncology	No	1	<0.001
	Yes	1.89 (1.36 to 2.63)

ADRs adverse drug reactions, CI confidence interval, GA general anesthesia, HR hazard ratio.