WAERS: Web-Assisted Estimation of the Relative Survival

Automatic calculation of Relative Survival (RS) can be performed through WAERS. Relative survival (RS) can be interpreted as the proportion of patients alive after T years of follow-up in the hypothetical situation that cancer is the only possible cause of death. RS is estimated as the ratio between observed survival and expected survival. Expected survival is estimated on the basis of the geographical area to which patients belong.

A tab-separated text file has to be provided with the following columns :

1. Patient ID (internal code freely defined by the user)
2. Age at beginning of study
3. Sex (1:Male , 2 Female)
4. Time of follow-up (years)
5. Death (0: No, 1: Yes)
6. Year at beginning of study

Mortality from several countries is currently available: Austria, Belgium, Bulgaria, Canada, Czech Republic, Denmark, England&Wales, Finland, France, Germany, Hungary, Iceland, Italy, Japan, Latvia, Lithuania, Netherlands, New Zealand, Norway, Russia, Slovakia, Slovenia, Spain, Sweden, Switzerland & USA.
Mortality data has been obtained through Human Mortality Database. Future improvements of this application will include mortality tables of Latin American and European Union countries, and stratified (control variable) analysis. We are working on improvements of this version.

The file should be in ASCII format, including the following variables: 

 1	87.00	1	0.08	1	1992
 2	70.00	1	10.3	0	1993
 3	75.00	1	9.83	0	1991
 4	84.00	1	2.67	1	1992
 5	85.00	2	5.08	1	1983
 6	79.00	2	9.17	0	1988
 7	74.00	2	2.58	1	1992

Using WAERS: a mock Example

NOTE: This process could take few minutes!!

Mortality of the reference population (Country):

User Names:

Institution-Country:

E-mail where the results should be returned:

Name of the file:

Reference:

Clèries R, Ribes J, Gàlvez J, Melià A, Moreno V, Bosch F.X. Automatic calculation of relative survival through the web. The WAERS project of the Catalan Institute of Oncology. Gac Sanit 2005;19:71-75

Clèries R, Ribes J, Moreno V, Esteban L, Pareja L, Galvez J, Martinez JM, Bosch FX , Borras JM. [Relative survival computation. Comparison of methods for estimating expected survival]. Gac Sanit. 2006;20(4):325-31.

Human Mortality Database. University of California, Berkeley (USA), and Max Planck Institute for Demographic Research (Germany). Available at www.mortality.org or www.humanmortality.de (data downloaded on September 2007).

Cleries,R.; Valls,J.; Esteban,L.; Galvez,J.; Pareja,L.; Sanz,X.; Alliste,L.; Martinez,J.M.; Moreno,V.; Bosch,X.; Borras,J.M.; Ribes,J.M. WAERS: an application for Web-assisted estimation of relative survival. Med Inform Internet Med 2007; 32(3):169-175.
 
 

Š2010 Registre de Cāncer de Catalunya. Tots els drets reservats.