ROC curve of 3 cutoff values for absolute and relative presenteeism.

Receiver-operating characteristic (ROC) analysis of absolute and relative presenteeism as indicators of mental-disease-related absence; AUC: the area under the curve; 95%CI: 95% confidence interval; A ROC analysis of absolute presenteeism revealed cutoff points of 40, 50, and 60. A ROC analysis of relative presenteeism revealed cutoff points of 0.8, 0.9, and 1.0.