Fig. 2

Receiver-operator characteristic (ROC) curves of the total number of somatic symptoms for screening major depression in Japanese workers. Closed and open circles indicate the sensitivity and specificity in men (n = 991) and women (n = 452), respectively. <1> (1) Cutoff point of the total number of somatic symptoms as ≥1 (positive) or 0 (negative). <2> (2) Cutoff point of the total number of somatic symptoms as ≥2 (positive) or ≤1 (negative). <3> (3) Cutoff point of the total number of somatic symptoms as ≥4 (positive) or ≤3 (negative). This figure was completed by reanalyzing data from a previous study conducted by Nakao et al. [37]