The Effects of Pre-treatment Depressive Symptoms on Quality of Life Across Cognitive Behavioral Therapy for Chronic Pain.

ABSTRACT

Recent studies suggest that chronic pain affects millions and carries significant physical, financial, and social burdens, and thus adversely affects quality of life (QOL). Cognitive behavioral therapy for chronic pain (CBTp) is a non-pharmacological treatment method which has been shown to reduce a sufferer's experience of chronic pain and improve overall QOL. These and other studies also indicate that affective symptoms likely impact the effectiveness of CBTp. The current study focused on the effects of depressive symptoms on changes in QOL ratings across a 12-session CBT for chronic pain. Participants in this study (n = 313; mean age = 46.83 years, SD = 10.99, range = 19.1-79.9, 63.9% female, 83.9% Caucasian) were current patients of a mid-sized tertiary multidisciplinary outpatient chronic pain treatment facility. Progress through CBTp was assessed using QOL as a dependent variable and analyzed using RMANOVAs. All participants showed improvements in QOL ratings across the CBTp period, but greater improvements were seen in participants in the low depression category than in the high or moderate depression category. This study also confirms the clinical utility of the BDI-II with chronic pain patients.