Table of Contents
ISRN Oncology
Volume 2012 (2012), Article ID 207263, 5 pages
http://dx.doi.org/10.5402/2012/207263
Research Article

Oropharyngeal Cancer Survival: A Population-Based Study of Patients Diagnosed between 1978 and 2002

1Departamento de Saúde Coletiva, Universidade Federal do Rio Grande do Norte, 59010-000 Natal, Brazil
2Departamento de Microbiología, Medicina Preventiva y Salud Pública, Universidad de Zaragoza, 50005 Zaragoza, Spain
3Servicio de Rehabilitación, Hospital Can Misses, 07800 Ibiza, Spain
4Department of Epidemiology, International Prevention Research Institute (IPRI), 69006 Lyon, France
5Goiania Population-Based Cancer Registry, 74605-070 Goias, Brazil

Received 4 June 2012; Accepted 1 July 2012

Academic Editors: G. Metro and K. Sonoda

Copyright © 2012 Dyego Leandro Bezerra de Souza et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Objective. This paper aims at studying oropharyngeal cancer survival from the Population-Based Cancer Registry of Zaragoza, Spain, for the 1978–2002 period. Methods. The survival rates were calculated by the Kaplan-Meier method, and the automated calculation method of the Catalan Institute of Oncology was utilized to obtain the relative survival. Results. The oropharyngeal cancer survival rate was 61.3% in the first year and 33.9% in the fifth year. One-year relative survival was 62.2% (CI 95%: 57.4–67.4), and five-year relative survival was 36.6% (CI 95%: 31.8–42.1). Comparison of survival rates by sex revealed statistically significant differences ( ๐‘ƒ value = 0.017) with better survival in women. There were no differences when comparing the three age groups and the three studied time periods 1978–1986, 1987–1994, and 1995–2002. Conclusions. The data suggests that there were no significant changes in oropharyngeal cancer survival in the province of Zaragoza throughout the years.