Fig. 1.

Receiver operating characteristic curve for MN and PC case–control status. The area under the curve (95% CI) was 0.73 (0.69–0.76, P < 0.001) for the background MN (solid line) and 0.68 (0.64–0.72, P < 0.001) for the H₂O₂-induced MN (dashed line). Using the optimal cut-point of 11.5 for background MN and 15.5 for H₂O₂-induced MN, the sensitivity and specificity was 70.2 and 63.5% and 62.1 and 61.8%, respectively.