Table. Dementia rates and hazard ratios, according to type of incident stroke.

Stroke type	Cohort	Number		Dementia
			Person-years	Number of events	Rate* (95% CI)	Hazard Ratios (95% CI)
3-12 months after stroke diagnosis
All	Stroke	215,118	151,097	2,391	15.8 (15.2-16.5)	2.57 (2.44–2.70)
	Comparison	1,075,588	786,778	4,996	6.35 (6.17-6.53)	reference
Ischemic	Stroke	84,220	59,158	854	14.4 (13.5-15.4)	2.29 (2.11–2.48)
	Comparison	421,098	305,561	1,973	6.46 (6.17-6.74)	reference
ICH	Stroke	16,723	11,663	241	20.7 (18.1-23.3)	4.34 (3.64–5.16)
	Comparison	83,615	61,268	300	4.90 (4.34-5.45)	reference
SAH	Stroke	9,872	7,161	78	10.9 (8.47-13.3)	6.78 (4.82–9.54)
	Comparison	49,360	36,478	62	1.70 (1.28-2.12)	reference
> 1-10 years after stroke diagnosis
All	Stroke	189,094	965,398	11,797	12.2 (12.0-12.4)	1.73(1.70–1.77)
	Comparison	913,584	5,616,392	44,322	7.89 (7.82-7.97)	reference
Ischemic	Stroke	73,805	356,777	4,151	11.6 (11.3-12.0)	1.64(1.58–1.71)
	Comparison	357,489	2,019,490	15,440	7.65 (7.52-7.77)	reference
ICH	Stroke	14,507	76,128	1,032	13.6 (12.7-14.4)	2.60(2.40–2.82)
	Comparison	70,662	448,899	2,802	6.24 (6.01-6.47)	reference
SAH	Stroke	9,242	62,684	241	3.84 (3.36-4.33)	2.63(2.24–3.10)
	Comparison	45,794	327,665	565	1.72 (1.58-1.87)	reference
> 10-30 years after stroke diagnosis
All	Stroke	49,968	258,725	2,956	11.4 (11.0-11.8)	1.58(1.50–1.66)
	Comparison	188,878	1,264,005	9,233	7.30 (7.16-7.45)	reference
Ischemic	Stroke	16,703	84,607	947	11.2 (10·5-11.9)	1.62 (1.48–1.76)
	Comparison	63,445	416,557	3,004	7.21 (6.95-7.47)	reference
ICH	Stroke	4,237	24,937	267	10.7 (9.42-12.0)	2.10(1.78–2.47)
	Comparison	17,075	125,648	687	5.47(5.06-5.88)	reference
SAH	Stroke	4,902	38,296	246	6.42 (5.62-7.23)	2.28 (1.92–2.70)
	Comparison	22,039	191,296	560	2.93 (2.68-3.17)	reference

^*Per 1,000 person-years

CI indicates confidence interval; ICH, intracerebral hemorrhage; SAH, subarachnoid hemorrhage