Accuracy of cause of death data routinely recorded in a population-based cancer registry: impact on cause-specific survival and validation using the Geneva cancer registry

Background Information on the underlying cause of death of cancer patients is of interest because it can be used to estimate net survival. The population-based Geneva Cancer Registry is unique because registrars are able to review the official cause of death. This study aims to describe the differen...

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Vydáno v:BMC cancer Ročník 13; číslo 1; s. 609
Hlavní autoři: Schaffar, Robin, Rapiti, Elisabetta, Rachet, Bernard, Woods, Laura
Médium: Journal Article
Jazyk:angličtina
Vydáno: London BioMed Central 27.12.2013
BioMed Central Ltd
Springer Nature B.V
Témata:
Accuracy
Adolescent
Adult
Aged
Aged, 80 and over
Biomedical and Life Sciences
Biomedicine
Breast cancer
Breast Neoplasms - epidemiology
Breast Neoplasms - mortality
Breast Neoplasms - pathology
Breast Neoplasms - therapy
Cancer patients
Cancer Research
Cause of Death
Child
Child, Preschool
Civil unions
Disease
Epidemiology
Female
Health care
Health Promotion and Disease Prevention
Humans
Infant
Infant, Newborn
Japan
Medical research
Medicine/Public Health
Middle Aged
Mortality
Neoplasm Staging
Oncology
Population Surveillance
prevention and public health
Preventive medicine
Public health
Registries
Research Article
Risk Factors
Surgical Oncology
Switzerland
United Kingdom
Young Adult
United Kingdom
Switzerland
Japan
Cancer registry
Cause-of-death
Cause-specific survival
Concordance
ISSN:1471-2407, 1471-2407
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Shrnutí:Background Information on the underlying cause of death of cancer patients is of interest because it can be used to estimate net survival. The population-based Geneva Cancer Registry is unique because registrars are able to review the official cause of death. This study aims to describe the difference between the official and revised cause-of-death variables and the impact on cancer survival estimates. Methods The recording process for each cause of death variable is summarised. We describe the differences between the two cause-of-death variables for the 5,065 deceased patients out of the 10,534 women diagnosed with breast cancer between 1970 and 2009. The Kappa statistic and logistic regression are applied to evaluate the degree of concordance. The impact of discordance on cause-specific survival is examined using the Kaplan Meier method. Results The overall agreement between the two variables was high. However, several subgroups presented a lower concordance, suggesting differences in calendar time and less attention given to older patients and more advanced diseases. Similarly, the impact of discordance on cause-specific survival was small on overall survival but larger for several subgroups. Conclusion Estimation of cancer-specific survival could therefore be prone to bias when using the official cause of death. Breast cancer is not the more lethal cancer and our results can certainly not be generalised to more lethal tumours.
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ISSN:1471-2407
1471-2407
DOI:10.1186/1471-2407-13-609