Table 3.

Measures of diagnostic accuracy of primary reporting on WBCT and secondary reporting after additional imaging

Index test	TP	FP	TN	FN	Sensitivity (95% CI)	Specificity (95% CI)	PPV (95% CI)	NPV (95% CI)
Primary reporting on WBCT	4	0	447	55	6.8% (1.9–16.5%)	100.0% (99.2–100.0%)	100.0% (39.8–100.0%)	89.0% (86.0–91.6%)
Secondary imaging and reporting	47	0	447	12	79.7% (67.2–89.0%)	100.0% (99.2–100.0%)	100.0% (92.5–100.0%)	97.4% (95.5–98.6%)

TP True positive, FP False positive, TN True negative, FN False negative, PPV Positive predicted value, NPV Negative predicted value, CI Confidence interval