Table 2.

Meningioma risk in patients on high doses of cyproterone acetate (CPA). Results of adjusted Poisson regression analysis

Variable	Categoríes	Cases	Person-years	Rate ratio (95% CI)	P value
CPA use	Non-users	452	6 807 220	1
	Low dose	0	67 272	*	*
	High dose	4	6 663	11.4 (4.3, 30.8)	<0.0001
Age (years)	0–44	53	4 012 449	1
	45–64	162	1 705 155	7.1 (5.2, 9.7)	<0.0001
	65+	241	1 163 551	14.7 (10.9, 19.8)	<0.0001
Gender	Male	130	3 228 899	1
	Female	326	3 652 256	2.0 (1.6, 2.4)	<0.0001

^*Not calculable.