title: Knee pain and disability in the Nottingham community: association with poor health status and psychological distress.
abstract: OBJECTIVE
  To assess the prevalence of knee pain, disability and health status in the community, and to examine the association of pain with psychological distress.
  
  
  METHODS
  A postal survey was sent to 4057 men and women aged 40-79 yr in Nottingham. Health status was assessed using the SF-36 instrument, with the specific dimensions of physical function and mental health used to measure disability and psychological distress.
  
  
  RESULTS
  The overall response rate was 81.9%. The prevalence of knee pain was 28.7%, rising with age. Disability was more common in those with knee pain compared to those without pain (P < 0.001). Subjects with knee pain had lower scores for all dimensions of health. When adjusted for potential confounders, low mental health scores associated with increased odds for pain and disability (2.1, 95% CI 1.7-2.6; and 4.7, 95% CI 3.7-6.1).
  
  
  CONCLUSIONS
  Knee pain is common in this population and is associated with poor perceived health and significant disability. Psychological distress strongly associates with both pain and disability.
authors.affiliation: Rheumatology Unit, City Hospital, Nottingham.
authors.forename: S C
authors.initials: SC
authors.lastname: O'Reilly
authors.forename: K R
authors.initials: KR
authors.lastname: Muir
authors.forename: M
authors.initials: M
authors.lastname: Doherty
mesh_terms: D000328:Adult; D000368:Aged; D004185:Disability Evaluation; D005260:Female; D006304:Health Status; D006305:Health Status Indicators; D006801:Humans; D007719:Knee Joint; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000150:complications*; D010146:Pain / Q000453:epidemiology* / Q000209:etiology / Q000523:psychology*; D010147:Pain Measurement; D013315:Stress, Psychological / Q000209:etiology*; D006113:United Kingdom