title: Health status measurements at diagnosis as predictors of survival among adults with brain tumors.
abstract: OBJECTIVE
  The intent of this study was to determine whether baseline measures of functional capacity and performance could be used to predict survival in adults following the diagnosis of brain tumors.
  
  
  METHODS
  Comprehensive health status and health-related quality of life (HRQL) were measured using the Health Utilities Index (HUI; McMaster University, Hamilton, Canada) system by a self-assessment questionnaire in a survey of 100 consecutive patients. The Karnofsky Performance Score (KPS) and Folstein's Mini-Mental State Examination (MMSE) scores were measured by a physician blinded to the HUI results. The patients were observed for up to 5 years to recorded dates of death.
  
  
  RESULTS
  An HUI questionnaire was completed for 93% of the patients and 69% died within 5 years of assessment. The HUI revealed a burden of morbidity and complexity of disability that far exceeded that reported for the general population. KPS and MMSE correlated strongly with each other (r = 0.52; P < .001). A decrease of 0.1 units in HUI Mark 2 (HUI2) self-care single-attribute utility score was associated with an increased hazard of death of 30% (P = .023) for patients with low-grade tumors (n=25). For patients with high-grade tumors (n=56), a 10 unit decrease in the KPS, a 5 unit decrease in MMSE, and a 0.1 decrease in HUI Mark 3 (HUI3) speech and dexterity single-attribute scores were associated with an increased hazard of death of 20% (P = .022), 26% (P = .015), 36% (P = .021), and 18% (P = .035), respectively.
  
  
  CONCLUSIONS
  Scores derived from the measurement of HRQL following diagnosis can predict survival in adults with brain tumors.
authors.affiliation: The Juravinski Cancer Centre, Hamilton, Ontario, Canada.
authors.forename: Helen
authors.initials: H
authors.lastname: McCarter
authors.forename: William
authors.initials: W
authors.lastname: Furlong
authors.forename: Anthony C
authors.initials: AC
authors.lastname: Whitton
authors.forename: David
authors.initials: D
authors.lastname: Feeny
authors.forename: Sonja
authors.initials: S
authors.lastname: DePauw
authors.forename: Andrew R
authors.initials: AR
authors.lastname: Willan
authors.forename: Ronald D
authors.initials: RD
authors.lastname: Barr
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001932:Brain Neoplasms / Q000175:diagnosis* / Q000532:radiotherapy / Q000601:surgery / Q000628:therapy*; D005260:Female; D006304:Health Status; D006305:Health Status Indicators; D006801:Humans; D017567:Karnofsky Performance Status; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D016016:Proportional Hazards Models; D011446:Prospective Studies; D011788:Quality of Life; D011795:Surveys and Questionnaires; D016019:Survival Analysis