Standardization of a screening instrument (PHQ-15) for somatization syndromes in the general population

The PHQ-15 is widely used as an open access screening instrument for somatization syndromes in different health care settings, thus far, normative data from the general population are not available. The objectives of the study were to generate normative data and to further investigate the construct validity of the PHQ-15 in the general population. Nationally representative face-to face household surveys were conducted in Germany between 2003 and...