title: SF-36 scores in degenerative lumbar spine disorders: analysis of prospective data from 451 patients.
abstract: BACKGROUND
  When using Health-Related Quality of Life (HRQoL) in assessing outcomes of treatment, normative data for different diagnoses are needed to allow cross-comparisons of existing and future studies. We determined the SF-36 scores in patients with surgical lumbar spine problems.
  
  
  METHODS
  This is a prospective observational study of consecutive surgical patients in one institution. In addition to SF-36 questionnaire responses, local pain, radiating pain, analgesic intake and walking ability were recorded, together with several other demographic variables. 451 patients (50% women) with median age 52 (13-88) years, operated from 1998 through 2002, were included in the study.
  
  
  RESULTS
  Preoperative SF-36 scores were significantly lower than those derived from previously published material (the general population, nonspecific low back pain (LBP) patients, other samples of non-LBP patients), also with the use of norm-based scoring. Sick-leave and worker's compensation seemed to affect perceived Health-Related Quality of Life (HRQoL), but smoking habits did not. Some SF-36 domains showed a possible discriminating pattern between diagnoses.
  
  
  CONCLUSIONS
  HRQoL reported by patients scheduled for lumbar spine surgery was much worse than for the normal population and for LBP patients. The normative SF-36 values provided may be used as a benchmark in future studies.
authors.affiliation: Department of Orthopedics, Lund University Hospital, Lund, Sweden. gzanoli@globeweb.org
authors.forename: Gustavo
authors.initials: G
authors.lastname: Zanoli
authors.forename: Bo
authors.initials: B
authors.lastname: Jönsson
authors.forename: Björn
authors.initials: B
authors.lastname: Strömqvist
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017063:Outcome Assessment, Health Care / Q000379:methods*; D010147:Pain Measurement; D017060:Patient Satisfaction; D011446:Prospective Studies; D011788:Quality of Life; D013122:Spinal Diseases / Q000175:diagnosis / Q000523:psychology / Q000601:surgery*; D011795:Surveys and Questionnaires