TABLE 2.

Comparison between mMCAi and non-mMCAi patients in the training and validation sets.

Variable	Training (n = 87)			Validation (n = 39)
	mMCAi (n = 36)	Non-mMCAi (n = 51)	P-value	mMCAi (n = 16)	Non-mMCAi (n = 23)	P-value
Male sex, n (%)	22(61.11%)	32(62.75%)	0.878	10(62.50%)	15(65.22%)	0.864
Age, y; mean ± SD	75.14 ± 12.60	70.55 ± 14.67	0.403	72.06 ± 10.42	70.78 ± 11.26	0.799
Baseline NIHSS, median (IQR)	23(19.25–27)	17(14–21)	0.001	18.50(16.25–21.75)	16(7–18)	0.028
Hypertension, n (%)	26(72.22%)	36(70.59%)	0.869	7(43.75%)	14(60.87%)	0.342
Diabetes mellitus, n (%)	9(25.00%)	10(19.61%)	0.604	1(6.25%)	3(13.04%)	0.631
Hyperlipidemia, n (%)	11(30.56%)	9(17.65%)	0.199	3(18.75%)	4(17.39%)	0.915
Atrial fibrillation, n (%)	21(58.33%)	20(39.22%)	0.087	10(62.50%)	11(47.83%)	0.516
Smoking, n (%)	9(25.00%)	22(43.14%)	0.112	7(43.75%)	4(17.39%)	0.146
Alcohol abuse, n (%)	6(16.67%)	13(25.49%)	0.432	5(31.25%)	2(8.70%)	0.101
ASPECTS on NCCT, median (IQR)	5(1.25–8)	8(5–10)	<0.001	3.50(1.25–5.75)	8(7–10)	< 0.001
HVS of MCA, n (%)	23(63.89%)	26(50.98%)	0.276	12(75.00%)	7(30.43%)	0.010
Hemorrhage transformation, n (%)	13(36.11%)	20(39.22%)	0.825	8(50.00%)	10(43.48%)	0.752
Collateral score, median (IQR)	1(1–1)	1(1–1)	0.051	1(1–1)	1(1–1)	0.767
Right side of the MCA M1 occlusion, n (%)	18(50.00%)	24(47.06%)	0.830	12(75.00%)	11(47.83%)	0.111
ICA occlusion, n (%)	20(55.56%)	16(31.37%)	0.029	10(62.50%)	5(21.74%)	0.018
Rad score, mean ± SD	1.82 ± 4.12	−1.65 ± 1.64	0.020	1.59 ± 3.67	−1.02 ± 1.03	0.001

SD, standard deviation; NIHSS, National Institutes of Health Stroke Scale; IQR, interquartile range; ASPECTS, Alberta Stroke Program Early CT Score; NCCT, non-contrast computed tomography; HVS, hyperdense vessel sign; MCA, middle cerebral artery; ICA, internal carotid artery.