Symptom checklist SCL-27 -: Results of a representative German survey

The Symptom-Checklist-27 (SCL-27) forms a modification of the widely used Symptom-Checklist-90-R, with the latter demonstrating considerable shortcomings in psychometric properties. The SCL-27 is designed to screen for psychiatric symptoms in patients presenting somatic complaints. It contains the six subscales depressive, dysthymic, vegetative, agoraphobic, sociophobic symptoms and symptoms of mistrust. Additionally, a global severity index (GSI-27), similar to the GSI in the SCL-90-R is available. The subscales are short, the number of items varies between four and six. Psychometric properties and reference values based on a representative German sample of more than 2000 subjects are presented for the various subscales. All subscales show sufficient internal consistency with Cronbach's alpha greater than or equal to 0.70 and for the GSI-27 alpha is = 0.93. The correlation between GSI-27 and GSI is r = 0.93. Sex-specific cut-offs are presented to identify those patients, who need further examination.