title: Patient characteristics that affect the outcome of total hip arthroplasty: a review.
abstract: OBJECTIVE
  To review the literature regarding patient factors pertinent to the outcome of total hip arthroplasty (THA).
  
  
  METHODS
  MEDLINE from 1966 onward (key words "hip prosthesis" and "treatment outcome") and literature previously known to the authors and cited in papers from all sources.
  
  
  METHODS
  All identified studies were included provided the methodology permitted assessment of the effect of patient factors and a clear outcome was defined (either prosthesis survival or specific functional outcomes).
  
  
  METHODS
  The patient factors, methods and outcomes described in each paper were summarized on a data extraction form.
  
  
  RESULTS
  All data were reviewed by one author. This process was repeated by a second author, and the findings were reviewed by the remaining 2 authors to verify the findings. The best functional outcomes and prosthesis survival rates were reported among patients who were between 45 and 75 years of age, weighed less than 70 kg, had strong social support, had a higher educational level, had better preoperative functional status and had no comorbid disease.
  
  
  CONCLUSIONS
  Important research remains to be done to examine the magnitude and interaction of patient factors on the the outcome of THA.
authors.affiliation: Division of Orthopedic Surgery, Hospital for Sick Children, University of Toronto, Ont.
authors.forename: N L
authors.initials: NL
authors.lastname: Young
authors.forename: D
authors.initials: D
authors.lastname: Cheah
authors.forename: J P
authors.initials: JP
authors.lastname: Waddell
authors.forename: J G
authors.initials: JG
authors.lastname: Wright
mesh_terms: D000367:Age Factors; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000706:statistics & numerical data; D001835:Body Weight; D015897:Comorbidity; D004522:Educational Status; D005260:Female; D006622:Hip Prosthesis / Q000706:statistics & numerical data; D006801:Humans; D008297:Male; D008875:Middle Aged; D017063:Outcome Assessment, Health Care / Q000379:methods; D012307:Risk Factors; D012737:Sex Factors; D012944:Social Support; D012959:Socioeconomic Factors; D016896:Treatment Outcome