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Table 1: Classification of each spinal level as normal versus stenosed on the evaluation cohort (n = 130) using each quantitative metric^{^a}
Metrics Compared AUROC: Group 1 AUROC: Group 2 Z-Statistic Significance
DSCA vs DSDIA 96.5 (95.0–97.7) 96.6 (95.1–97.8) 0.19 P = .85
DSCA vs DDRDIA 96.5 (95.0–97.7) 98.0 (96.7–98.9)^{^b} 2.24^{^b} P = .02^{^b}
DSCA vs DDRCA 96.5 (95.0–97.7) 98.6 (97.4–99.3)^{^b} 3.54^{^b} P = .004^{^b}
DSDIA vs DDRDIA 96.6 (95.1–97.8) 98.0 (96.7–98.9)^{^b} 2.56^{^b} P = .01^{^b}
DSDIA vs DDRCA 96.6 (95.1–97.8) 98.6 (97.4–99.3)^{^b} 2.89^{^b} P = .004^{^b}
DDRDIA vs DDRCA 98.0 (96.7–98.9) 98.6 (97.4–99.3) 1.57 P = .12
↵a Reported are pair-wise comparisons between the quantitative metrics using the DeLong paired test for AUROCs. Data in parentheses represent 95% confidence intervals.
↵b Difference in AUROC is statistically significant (P < .05).