Table 2:

Differences in diagnostic performance of C-CTA and R-CTA

Variables	C-CTA	R-CTA	OR^{^a}	P Values
Subject-based analysis
Feeder detection accuracy (%)
Observer 1	47 (7/15)	80 (12/15)		.025^{^b}
Observer 2	40 (6/15)	73 (11/15)		.025^{^b}
Time required for diagnosis (sec)
Observer 1	97.1 ± 37.4	45.1 ± 23.6		.002^{^b}
Observer 2	89.5 ± 60.0	45.6 ± 24.1		.020^{^b}
Intervertebral foramen–based analysis
Sensitivity (%)^{^c}	44.4 (22.2–66.7)	72.2 (50.0–94.4)	3.26 (0.82–13.0)	.095
Specificity (%)^{^c}	98.1 (97.8–99.5)	99.5 (98.7–100)	3.55 (0.87–14.5)	.077
Accuracy (%)^{^c}	95.6 (93.8–97.2)	98.2 (96.9–99.2)	2.49 (1.04–6.00)	.041^{^b}