Table 2.

Association between prestroke cognitive status and death at 1 year

	HR	(95% CI)	p
Unadjusted model
No cognitive impairment	Ref.	–	–
MCI	1.42	(1.11–1.82)	0.01
Dementia	2.84	(2.33–3.46)	< 0.001
Model 1*
No cognitive impairment	Ref.	–	–
MCI	1.08	(0.84–1.39)	0.56
Dementia	2.04	(1.66–2.52)	< 0.001
Model 2**
No cognitive impairment	Ref.	–	–
MCI	1.11	(0.85–1.45)	0.44
Dementia	1.98	(1.60–2.48)	< 0.001

Bold indicates p < 0.05

MCI mild cognitive impairment

^*Adjusted for sex and age

^**Final model with stepwise backward selection adjusted for sex, age, atrial fibrillation, peripheral artery disease, kidney function, hepatic disease, solid cancer, chronic anemia, NIHSS score at admission, and stroke type