The epidemiology of chronic pain in the community

Background Chronic pain is recognised as an important problem in the commun ity but our understanding of the epidemiology of chronic pain remains limit ed. We undertook a study designed to quantify and describe the prevalence a nd distribution of chronic pain in the community. Methods A random sample of 5036 patients, aged 25 and over, was drawn from 29 general practices in the Grampian region of the UK and surveyed by a pos tal self-completion questionnaire. The questionnaire included case-screenin g questions, a question on the cause of the pain, the chronic pain grade qu estionnaire, the level of expressed needs questionnaire, and sociodemograph ic questions. Findings 3605 questionnaires were returned completed. 1817 (50.4%) of patie nts self reported chronic pain, equivalent to 46.5% of the general populati on. 576 reported back pain and 570 reported arthritis; these were the most common complaints and accounted for a third of all complaints. Backward ste pwise logistic-regression modelling identified age, sex, housing tenure, an d employment status as significant predictors of the presence of chronic pa in in the community. 703 (48.7%) individuals with chronic pain had the leas t severe grade of pain, and 228 (15.8%) the most severe grade. Of those who reported chronic pain, 312 (17.2%) reported no expressed need, and 509 (28 .0%) reported the highest expressed need. Interpretation Chronic pain is a major problem in the community and certain groups within the population are more likely to have chronic pain. A detai led understanding of the epidemiology of chronic pain is essential for effi cient management of chronic pain in primary care.