Table 2. Comparison of NIHSS scores on admission between the PA and non-PA users according to stroke subtypes.

	PA user	Non-PA user	P value*
	(n = 401)	(n = 1461)
Total	7.6 ± 2.5	8.2 ± 2.9	< 0.001
Atherothrombosis	7.2 ± 2.1	8.9 ± 2.7	< 0.001
Small artery disease	4.9 ± 1.8	5.1 ± 2.1	0.056
Cardioembolism	11.8 ± 3.6	12.1 ± 4.2	0.146

PA, prestroke aspirin; NIHSS, National Institutes of Health Stroke Scale.