Table 6.

Diagnostic performance of the in-training operators after the integration of S-detect in the assessment of BI-RADS 4a lesions

Operator	Se	Sp	ROC area	PLR	NLR	PPV	NPV
5th year with limited experience	95.5% (84.5–99.4%)	75.0% (53.3–90.2%)	0.85 (0.76–0.95)	3.82 (1.90 7.66)	0.06 (0.02–0.24)	87.5% (74.8–95.3%)	90.0% (68.3–98.8%)
2nd year experienced	93.2% (81.3–98.6%)	79.2% (57.8–92.9%)	0.86 (0.77–0.95)	4.47 (2.04–9.80)	0.09 (0.03–0.26)	89.1% (76.4–96.4%)	86.4% (65.1–97.1%)
3rd year with limited experience	91.1% (78.8–97.5%)	70.8% (48.9–87.4%)	0.81 (0.71–0.91)	3.12 (1.66–5.87)	0.13 (0.05–0.33)	85.4% (72.2–93.9%)	81.0% (58.1–94.6%)
1st year experienced	97.7% (88.0–99.9%)	75.0% (53.3–90.2%)	0.86 (0.77–0.95)	3.91 (1.95–7.83)	0.03 (0.00–0.21)	87.8% (75.2–95.4%)	94.7% (74.0–99.9%)

PLR positive likelihood ratio, NLR negative likelihood ratio, ROC receiver operator curve, PPV positive predictive value, NPV negative predictive value