Measuring improvement in depression in cancer patients: a 50% drop on the self-rated SCL-20 compared with a diagnostic interview.
OBJECTIVE: To determine the validity of a 50% drop in the 20-item Symptom Checklist Depression Scale (SCL-20) score against the "gold standard" of no longer meeting criteria for major depression as assessed using a diagnostic interview in an outpatient cancer population and also to examine the validity of other potential cut-offs (i.e., percentage drops). MATERIALS AND METHODS: Secondary analysis of data from a randomized trial which compared collaborative care with usual care for cancer pati...Expand abstract
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