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The PHQ-2 is a screening test for major depressive disorder (MDD) derived from PHQ-9, which has shown to be useful in the detection of cases of clinical significance in previous studies. The psychometric properties of PHQ-2 in the Colombian population are unknown.

PHQ-2 were assessed in 243 patients in general medical consultations using the Mini-International Neuropsychiatric Interview (MINI) as the gold standard. Internal consistency, convergent validity and criterion validity were calculated by analyzing the Receptor Operating Characteristics (ROC) and the area under the curve (AUC).

Cronbach's alpha and McDonald's omega coefficients were 0.71. Spearman's rho coefficients for correlations with PHQ-9 and HADS-D scores were 0.63 and 0.59 (p<0.01). AUC was 0.89. The optimal cut point was ≥2 with the following indicators: sensitivity 0.87 specificity 0.74; Youden index 0 …