title: Laryngeal cancer survival in Zaragoza (Spain): a population-based study.
abstract: OBJECTIVE
  This article aims to study larynx cancer survival from the Population-Based Cancer Registry of Zaragoza, Spain, for the period 1978-2002.
  
  
  METHODS
  The survival rates were calculated using the Kaplan-Meier method. The automated calculation of the Catalan Institute of Oncology was utilised to obtain the relative survival.
  
  
  RESULTS
  The observed survival rate was 84.6% in the first year and 60.9% in the fifth year. The one-year relative survival in both genders was 86.8% (CI 95%: 85.3-88.4) and 70.1% (CI 95%: 67.8-72.4) after five years. Glottic cancer presented a better survival rate than supraglottic and subglottic cancers, and a better survival rate was also observed in younger ages. There were no statistical differences when comparing survival rates by gender and between the periods 1978-1986, 1987-1994 and 1995-2002.
  
  
  CONCLUSIONS
  The data suggest there were no significant changes in laryngeal cancer survival in the province of Zaragoza in the period 1978-2002 and that the tumours located in the glottis presented a better prognosis.
authors.affiliation: Departamento de Microbiología, Medicina Preventiva y Salud Pública, Universidad de Zaragoza, Spain. dysouz@yahoo.com.br
authors.forename: Dyego Leandro
authors.initials: DL
authors.lastname: Bezerra de Souza
authors.forename: Javier
authors.initials: J
authors.lastname: Jerez Roig
authors.forename: María Milagros
authors.initials: MM
authors.lastname: Bernal
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002294:Carcinoma, Squamous Cell / Q000453:epidemiology / Q000401:mortality*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006258:Head and Neck Neoplasms / Q000453:epidemiology / Q000401:mortality*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007822:Laryngeal Neoplasms / Q000453:epidemiology / Q000401:mortality*; D008297:Male; D008875:Middle Aged; D011153:Population; D013030:Spain / Q000453:epidemiology; D000077195:Squamous Cell Carcinoma of Head and Neck; D016019:Survival Analysis; D055815:Young Adult