Format

Send to

Choose Destination
J Clin Epidemiol. 2006 Jan;59(1):67-76. Epub 2005 Oct 3.

Using cancer registry data for survival studies: the example of the Ontario Cancer Registry.

Author information

1
Division of Cancer Care and Epidemiology, Queen's Cancer Research Institute, 10 Stuart St, Kingston Ontario K7L 3N6, Canada. sfh@post.queensu.ca

Abstract

BACKGROUND AND OBJECTIVES:

The Ontario Cancer Registry (OCR) is a population-based tumor registry created to provide data for epidemiologic research and for cancer surveillance. Recently it has been used for health services research. The objective of this project was to assess the quality of the OCR data that is used in survival analysis.

METHODS AND DESIGN:

Clinical information for 898 patients with squamous carcinoma of the head and neck including index tumor site, date of diagnosis, vital status, date of death, and cause of death from a prospective database at the Kingston Regional Cancer Center is compared to the same data elements in the OCR for the same patients.

RESULTS:

There is no statistically significant difference in disease-specific survival between the information from the two databases (log rank P = .89). The OCR captured and correctly assigned index tumor site for 81.4% (detection rate). The site assignment was accurate 90.9% of the time (confirmation rate), there was agreement on vital status (dead vs. alive) for all but one patient, and there was excellent agreement on date of death. However, cause of death (cancer vs. noncancer) based on death certificates had a 31% error rate.

CONCLUSION:

Researchers can be confident in the survival analysis generated from data in this registry, but need to be aware of potential sources of error.

PMID:
16360563
DOI:
10.1016/j.jclinepi.2005.05.001
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center