Correlates of depression in chronic pain patients: a comprehensive examination.

This study examined the relations between depression and demographic, pain-related, and work-related variables in 254 chronic pain patients. Regression analyses were conducted, initially by category (i.e.

What does the Beck Depression Inventory measure in chronic pain?: a reappraisal.

The Beck Depression Inventory (BDI) is widely used to document the prevalence of depression in suffers of chronic pain and in research designs about this population. Williams and Richardson (1993) initially posed the question, "What does the BDI measure in chronic pain?". Results from their study found 3 independent constructs, which differed somewhat from those obtained in analyses with other non-pain subsamples.