Table 2.

Overall and individual diagnostic accuracy, sensitivity, PPV, and NPV for 3 routine cytology techniques

Method	Accuracy, % (95% CI)	Sensitivity, % (95% CI)	Specificity, % (95% CI)	PPV, % (95% CI)	NPV, % (95% CI)
A	65.4 (46.2–80.6)	40.0 (37.5–67.1)	100 (74.1–100)	100 (61.0–100)	55.0 (34.2–74.2)
B	80.4 (67.5–89.0)	60.0 (40.7–76.6)	100 (87.1–100)	100 (79.6–100)	72.2 (56.0–84.2)
Total	75.3 (64.6–83.6)	52.5 (37.5–67.1)	100 (90.6–100)	100 (84.5–100)	66.1 (53–77.1)

A, smear; B, centrifugation of the cytological material collected and the cut-off brush + cell block when possible; PPV, positive predictive value; PNV, negative predictive value; CI, confidence interval.