Table 5.

Analyses of ANA score for the risk for futile recanalization in AIS patients treated with mechanical thrombectomy.

ANA score	Total N	Futile recanalization n (%)	OR (95% CI)*	P-values
0	19	4 (21.05%)	1 (Reference)	–
1	37	21 (56.76%)	6.32 (1.67–28.72)	0.01
2	62	49 (79.03%)	18.55 (5.03–83.65)	<0.001
3	22	20 (90.91%)	50.07 (7.74–495.93)	<0.001

ANA, Age-NIHSS-ASITN/SIR; AIS, acute ischemic stroke; OR, odds ratio; CI, confidence interval.

^*Adjusted for sex, age, smoking, drinking, hypertension, diabetes, history of stroke or TIA, coronary heart disease, atrial fibrillation, and TOAST.