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Clinical Journal of Pain:
doi: 10.1097/AJP.0b013e3182a0de5e
Original Articles

The Canadian STOP-PAIN Project: The Burden of Chronic Pain—Does Sex Really Matter?

Racine, Mélanie PhD*,†; Dion, Dominique MD; Dupuis, Gilles PhD*,§; Guerriere, Denise N. PhD; Zagorski, Brandon PhD; Choinière, Manon PhD†,§,#; and the Canadian STOP-PAIN Research Group by alphabetical order; Banner, Robert MD**; Barton, Pamela M. MD††; Boulanger, Aline MD‡‡; Clark, Alexander J. MD§§; Gordon, Allan MD∥∥; Guertin, Marie-Claude PhD¶¶; Intrater, Howard M. MD##; LeFort, Sandra M. PhD***; Lynch, Mary E. MD§§; Moulin, Dwight E. MD†††; Ong-Lam, May MD‡‡‡; Peng, Philip MBBS∥∥; Rashiq, Saifee MB§§§; Shir, Yoram MD∥∥∥; Taenzer, Paul PhD††; Ware, Mark MD∥∥∥

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Objectives: The Canadian STOP-PAIN Project assessed the human and economic burden of chronic pain (CP) in individuals on waitlists of Canadian multidisciplinary pain treatment facilities. This article focuses on sex differences. Objectives were to (1) determine the pain characteristics and related biopsychosocial factors that best differentiated women and men with CP; and (2) examine whether public and private costs associated with CP differed according to sex.

Materials and Methods: Sample consisted of 441 women and 287 men who were evaluated using self-administered questionnaires and a structured interview protocol. A subsample (233 women and 137 men) recorded all pain-related expenditures in a comprehensive diary over 3 months.

Results: Results revealed that the burden of illness associated with CP was comparable in both sexes for average and worst pain intensity, pain impact on daily living, quality of life, and psychological well-being. The same was true for pain-related costs. The results of a hierarchical logistic regression analysis, in which sex was treated as the dependent variable, showed that factors that differentiated men and women were: work status, certain circumstances surrounding pain onset, present pain intensity, intake of particular types of pain medication, use of certain pain management strategies, pain beliefs, and utilization of particular health care resources.

Discussion: This study suggests that women and men who are referred to multidisciplinary pain treatment facilities do not differ significantly in terms of their pain-related experience. However, the aspects that differ may warrant further clinical attention when assessing and managing pain.

© 2014 by Lippincott Williams & Wilkins

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