Estimating relative survival of Italian cancer patients from sparse cancer registries data

Tumori. Jan-Feb 1997;83(1):33-8.


Purpose: A method is presented for estimating relative survival of cancer patients at the national level from survival data provided by cancer registries covering only a subset of the general population and referring to different, and not necessarily overlapping, incidence periods.

Methods: Relative survival rates are estimated as a function of the covariates sex, age, epoch of diagnosis, and registry area by means of a multiple regression model. National estimates are then computed by appropriate weighting of the sex-, age-, time- and registry-specific expected relative survival values.

Results: The method is illustrated by a sample application to survival data of female breast cancer patients in Italy. The national estimates of breast cancer survival pattern show a mild decrease of survival with age and a marked increase with period of diagnosis.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Adult
  • Aged
  • Breast Neoplasms / mortality
  • Female
  • Humans
  • Italy / epidemiology
  • Male
  • Middle Aged
  • Multivariate Analysis
  • Neoplasms / mortality*
  • Registries
  • Regression Analysis
  • Risk
  • Survival Rate