Table 2.

Incidence rate of ICH in different ages.

Age	Numbers of patients	Person-years	Incidence/100,000	95% CI	Numbers of study	Incidence ratio (95% CI)
<45 (13, 14, 17, 18, 20–25, 29, 32–36, 38, 40, 41, 44–49, 51, 57, 61, 63)	184	7,175,944	2.37	1.9–3.0	28	0.21 (0.1–0.32)
45–54 (13, 14, 18, 19, 21–26, 29, 32–36, 38, 40, 41, 44–49, 51, 57, 61, 63)	344	1,435,489	22.1	16.9–27.3	29	Reference
55–64 (13, 14, 17–19, 21–26, 29, 32–36, 38, 40, 41, 44–49, 51, 57, 61, 63)	640	1,164,530	55	43.8–66.2	30	2.63 (1.9–3.4)
65–74 (13, 14, 17–19, 21–26, 29, 32–36, 38–41, 44–49, 51, 57, 61, 63, 64)	1,159	1,043,790	111.3	90.7–132	32	5 (3.3–6.7)
75–84 (13, 14, 17–19, 21–26, 29, 32, 34–36, 38, 39, 41, 44–46, 48, 49, 51, 57, 61, 63, 64)	919	620,473	166	128.6–203.3	29	6.6 (4.8–8.4)
>84 (13, 14, 17–19, 21–26, 29, 32, 34–36, 38, 39, 41, 44–46, 48, 49, 51, 57, 61, 63)	427	763,816	95.4	79.5–111.3	28	9.7 (6–13.5)

ICH, intracerebral hemorrhage.