Collateral status evaluation coupled with time window by dynamic axial computed tomographic angiography with a focus on the middle cerebral artery for mechanical thrombectomy

Table 4 A 50% or more decrease in NIHSS from baseline to 24 h using receiver operating curves by logistic regression analysis

	N	Sens (%)	Spec (%)	PPV (%)	OR	P	AUC	AICc	BIC
Collateral status: Poor
OtR (≤ 3.63 vs > 3.63) h	19	70	88.9	87.5	0.73 (0.44–0.98)	0.11	0.79	26.2	27.4
Collateral status: Intermediate
OtR (≤ 8.08 vs > 8.08) h	25	76.2	100	100	0.58 (0.24–0.85)	0.05	0.92	16.2	18
Collateral status: Intermediate or Good
OtR (≤ 8.67 vs > 8.67) h	29	75	80	94.7	0.7 (0.52–0.94)	0.03	0.82	24.7	26.9

AUC Area under the curve, AICc Corrected Akaike information criterion, BIC Baysian information criterion, OR Odds ratio, OtR Onset-to-reperfusion time, NIHSS National Institutes of Health Stroke Scale, PPV Positive predictive value, Sens Sensitivity, Spec Specificity

ISSN: 1471-2377