Table 3

 Predictive validity of the DISCs, NGRS, Yale question, and BDI-II against the DSM-IV criteria for case diagnosis of depression (n = 114)

DISCs score⩾2NGRS score⩾4Yale questionBDI-II score⩾14
BDI, Beck Depression Inventory; DISCs, Depression Intensity Scale Circles; DSM, Diagnostic and Statistical Manual of Mental Disorders; NGRS, Numbered Graphic Rating Scale.
Positive predictive valve75%74%62%69%
Negative predictive value77%78%78%84%