Table 4.

Incidence rate ratios (IRR) for (OAC-related) ICH in the 2017–2019 cohort, with the 2007–2009 cohort serving as reference.

Age groups	IRR all ICHs (95%-CI)	IRR OAC-ICH (95%-CI)	IRR Non-OAC-ICH (95%-CI)
18–44 years	0.60 (0.29–1.26)	0.98 (0.43–2.22)	0.88 (0.69–1.13)
45–54 years	1.32 (0.81–2.14)
55–64 years	0.75 (0.56–1.01)
65–74 years	0.77 (0.61–0.98)	0.43 (0.25–0.72)	0.91 (0.70–1.19)
75–84 years	0.56 (0.46–0.68)	0.53 (0.37–0.75)	0.57 (0.46–0.72)
>85 years	0.58 (0.44–0.77)	0.73 (0.46–1.16)	0.51 (0.35–0.72)
Total (age-adjusted)	0.67 (0.60–0.75)	0.58 (0.46–0.73)	0.71 (0.62–0.81)