The epidemiology of chronic pain in Canadian men and women between 1994 and 2007: longitudinal results of the National Population Health Survey.

Background: The epidemiology of chronic pain is poorly understood due to a paucity of longitudinal studies limiting the ability to develop prevention strategies for a condition resistant to many current therapies.

Objectives: To identify the incidence of and sociodemographic risk factors for chronic pain in Canadian women and men over a 12-year period.

Methods: Using data from the National Population Health Survey, individuals who developed chronic pain, defined as the presence of "usual pain" were identified.

Chronic pain, healthcare utilization, and quality of life following gastrointestinal surgery.

Objectives: Our aim in this pilot study was to identify potential predictors of chronic post-surgical pain (CPSP) and other outcomes to consider for inclusion in future prospective studies of CPSP following abdominal gastrointestinal surgery.

Methods: We followed 76 surgical patients during this prospective single-centre cohort study. Pain characteristics, health-related quality of life (HRQOL), and healthcare utilization were assessed preoperatively, at six weeks postoperatively, and at six months postoperatively.

Does health-related quality of life improve in women following gynaecological surgery?

Objectives: To measure the change in health-related quality of life (HRQOL) before and after gynaecologic surgery and to compare HRQOL to age-matched Canadian normative data.

Methods: This prospective observational cohort study consisted of a convenience sample of 460 women scheduled for elective gynaecologic surgery. Women underwent surgery for a variety of reasons, including cancer, menorrhagia/dysfunctional uterine bleeding, benign uterine masses, prolapse or urinary incontinence, and chronic pelvic pain syndromes.

Impact of perioperative pain intensity, pain qualities, and opioid use on chronic pain after surgery: a prospective cohort study.

Background And Objectives: A better understanding of the pathogenesis of chronic postsurgical pain is needed in order to develop effective prevention and treatment interventions. The objective of this study was to evaluate the incidence and risk factors for chronic postsurgical pain in women undergoing gynecologic surgery.

Methods: Pain characteristics, opioid consumption, and psychologic factors were captured before and 6 months after surgery.