Table 3.

Number of prescriptions per patient registered adjusting for age and gender. Poisson regression

Age group (years)	RR (95% CI)	P value
0–4 as reference
5–14	0.57 (0.33, 0.98)	0.041
15–24	0.57 (0.34, 0.95)	0.030
25–34	0.68 (0.43, 1.08)	0.106
35–44	0.99 (0.63, 1.56)	0.984
45–54	1.96 (1.27, 3.02)	0.01
55–64	4.04 (2.66, 6.13)	0.001
65–74	6.57 (4.36, 9.90)	0.001
75–84	7.84 (5.19, 11.84)	0.001
≥85	7.49 (4.84, 11.60)	0.001
Gender (male as reference)	1.23 (1.10, 1.37)	0.001

RR, Relative risk; CI, Confidence interval.