title: Supraglottic tumour categories: 1987 and 1997 International Union Against Cancer classification.
abstract: OBJECTIVE
  To verify the correlation to survival of 1987 and 1997 Union Internationale Contre le Cancer (UICC; International Union Against Cancer) supraglottic tumour categories.
  
  
  METHODS
  Two hundred and sixty patients seen at the ENT Clinic at the University of Ferrara from 1970 to 1990 had a complete follow-up and met the criteria of enrolment in this study. Data were analyzed by means of survival analyses (Kaplan-Meier and Cox algorithms).
  
  
  RESULTS
  Multivariate analysis (adjusted for number and patient's age) of 1997 UICC supraglottic tumour categories (T1 vs. T4) showed a significant correlation with the survival rate, whereas 1987 UICC categories did not reach any significant statistical value.
  
  
  CONCLUSIONS
  The 1997 UICC tumour categories represent an improvement in supraglottic cancer classification.
authors.affiliation: ENT Clinic, University of Ferrara, Italy.
authors.forename: S
authors.initials: S
authors.lastname: Pelucchi
authors.forename: F
authors.initials: F
authors.lastname: Carinci
authors.forename: A
authors.initials: A
authors.lastname: Farina
authors.forename: C
authors.initials: C
authors.lastname: Calearo
authors.forename: L
authors.initials: L
authors.lastname: Sticozzi
authors.forename: A
authors.initials: A
authors.lastname: Pastore
mesh_terms: D002294:Carcinoma, Squamous Cell / Q000473:pathology* / Q000601:surgery; D005260:Female; D006801:Humans; D007822:Laryngeal Neoplasms / Q000473:pathology* / Q000601:surgery; D008297:Male; D015999:Multivariate Analysis; D009367:Neoplasm Staging / Q000379:methods*; D012044:Regression Analysis; D016019:Survival Analysis; D013997:Time Factors