title: Prevalence of Psychiatric Morbidity in Chinese Subjects with Knee Osteoarthritis in a Hong Kong Orthopaedic Clinic.
abstract: OBJECTIVE
  To identify the prevalence and associated factors of psychiatric morbidities and to evaluate the effectiveness of the Hospital Anxiety and Depression Scale (HADS) in screening for psychiatric morbidity in patients with knee osteoarthritis in a local orthopaedic clinic.
  
  
  METHODS
  A cross-sectional study was conducted from October 2013 to June 2014 to examine patients with knee osteoarthritis at a specialist orthopaedic clinic. They were evaluated for psychiatric diagnoses using the Structured Clinical Interview for the DSM-IV Axis I Disorders (SCID-I). Socio-demographic and clinical characteristics were compared between patients with and without psychiatric morbidity. Patients were also assessed using the HADS with accuracy compared with the psychiatric diagnoses made by the SCID-I.
  
  
  RESULTS
  Of the 115 patients, 39% had current psychiatric disorders. Logistic regression analysis revealed that limitation of physical activity, perceived absence of confidant, a history of psychiatric illness, and follow-up in orthopaedic clinic for ≥ 5 years were independent factors associated with psychiatric disorders.
  
  
  CONCLUSIONS
  The prevalence of psychiatric morbidity in patients with knee osteoarthritis was significant. Recognition of independent associated factors can aid in early identification and intervention in patients who are at risk of developing psychiatric morbidity. The HADS is a useful means to screen for psychiatric morbidity in these patients.
authors.affiliation: Kwai Chung Hospital, Hong Kong SAR, China.
authors.forename: L Y
authors.initials: LY
authors.lastname: Wong
authors.affiliation: Department of Orthopaedics and Traumatology, Tseung Kwan O Hospital, Hong Kong SAR, China.
authors.forename: R L
authors.initials: RL
authors.lastname: Yiu
authors.affiliation: Department of Orthopaedics and Traumatology, Tseung Kwan O Hospital, Hong Kong SAR, China.
authors.forename: C K
authors.initials: CK
authors.lastname: Chiu
authors.affiliation: Kwai Chung Hospital, Hong Kong SAR, China.
authors.forename: W K
authors.initials: WK
authors.lastname: Lee
authors.affiliation: Department of Orthopaedics and Traumatology, Tseung Kwan O Hospital, Hong Kong SAR, China.
authors.forename: Y L
authors.initials: YL
authors.lastname: Lee
authors.affiliation: Kwai Chung Hospital, Hong Kong SAR, China.
authors.forename: P K
authors.initials: PK
authors.lastname: Kwong
authors.affiliation: Kwai Chung Hospital, Hong Kong SAR, China.
authors.forename: W Tl
authors.initials: WT
authors.lastname: Lo
mesh_terms: D000368:Aged; D003430:Cross-Sectional Studies; D005260:Female; D006723:Hong Kong / Q000453:epidemiology; D006801:Humans; D016015:Logistic Models; D008297:Male; D001523:Mental Disorders / Q000175:diagnosis / Q000453:epidemiology*; D008875:Middle Aged; D009985:Orthopedics; D020370:Osteoarthritis, Knee / Q000523:psychology*; D015995:Prevalence; D011569:Psychiatric Status Rating Scales
keywords: Anxiety; Depression; Disability evaluation; Osteoarthritis, knee; Pain