Figure 1
From: PHQ-8 Days: a measurement option for DSM-5 Major Depressive Disorder (MDD) severity
Receiver Operating Characteristic (ROC) curve plotted for Sensitivity and 1 - Specificity for each number of PHQ-8 Days (0 to 112 days) in identifying respondents indicating ≥ 7 days of either anhedonia or depression (n = 22,542), with major depressive episode (MDE) as defined by a DSM-IV-derived PHQ-8 criteria of ≥ 5 symptoms present 'more than half the days' and at least one of which must be anhedonia or depression.