Table 3.

Predictive performance of the model applied to the intercontinental patients’ cohort with corresponding 95% confidence intervals

Parameter	Coh-whole^	Coh-1.5 T^^	Coh-3.0 T^^
Accuracy	0.65 (0.52–0.77)	0.52 (0.32–0.71)	0.76 (0.55–0.87)
Specificity	0.64 (0.49–0.77)	0.42 (0.22–0.66)	0.75 (0.56–0.90)
Sensitivity	0.70 (0.35–0.93)	0.83 (0.36–0.99)	0.50 (0.07–0.93)
NPV*	0.91 (0.80–0.97)	0.90 (0.59–0.98)	0.92 (0.80–0.97)
PPV*	0.28 (0.18–0.40)	0.29 (0.20–0.41)	0.22 (0.08–0.48)
Kappa statistics	0.22 (0.00–0.43)	0.15 (− 0.08 to 0.40)	0.17 (− 0.18 to 0.51)

^ whole cohort; ^^ patients that underwent 1.5 Tesla and 3.0 Tesla magnetic resonance imaging. *Negative and positive predictive values (NPV and PPV, respectively)