title: WAERS: an application for Web-assisted estimation of relative survival.
abstract: Net cancer survival estimation is usually performed by computing relative survival (RS), which is defined as the ratio between observed and expected survival rates. The mortality of a reference population is required in order to compute the expected survival rate, which can be performed using a variety of statistical packages. A new Web interface to compute RS, called WAERS, has been developed by the Catalan Institute of Oncology. The reference population is first selected, and then the RS of a cohort is computed. A remote server is used for this purpose. A mock example serves to illustrate the use of the tool with a hypothetical cohort, for which RS is estimated based on three different reference populations (a province of Spain, an autonomous community (Region), and the entire Spanish population). At present, only mortality tables for different areas of Spain are available. Future improvements of this application will include mortality tables of Latin American and European Union countries, and stratified (control variable) analysis. This application can be also useful for cohort mortality studies and for registries of several diseases.
authors: Servei d'Epidemiologia i Registre del Càncer, Institut Català d'Oncologia, L'Hospitalet de Llobregat-Spain, Barcelona, Spain. r.cleries@iconcologia.net
authors: Ramon
authors: R
authors: Clèries
authors: Joan
authors: J
authors: Valls
authors: Laura
authors: L
authors: Esteban
authors: Jordi
authors: J
authors: Gálvez
authors: Laura
authors: L
authors: Pareja
authors: Xavier
authors: X
authors: Sanz
authors: Luisa
authors: L
authors: Alliste
authors: José Miguel
authors: JM
authors: Martínez
authors: Víctor
authors: V
authors: Moreno
authors: Xavier
authors: X
authors: Bosch
authors: Josep Maria
authors: JM
authors: Borràs
authors: Josepa Maria
authors: JM
authors: Ribes
mesh_terms: D006801:Humans; D020407:Internet; D009369:Neoplasms / Q000401:mortality; D009716:Numerical Analysis, Computer-Assisted; D012042:Registries / Q000706:statistics & numerical data; D013030:Spain / Q000453:epidemiology; D016019:Survival Analysis; D015996:Survival Rate