Abstract
Cancer registration is an important component of a comprehensive cancer control program, providing timely data and information for research and administrative use. Capture-recapture methods have been used as tools to investigate completeness of cancer registry data. This study aimed to estimate the completeness of lung cancer cases registered in Ardabil Population Based Cancer Registry (APBCR) with a three-source capture-recapture method. Data for all new cases of lung cancer reported by three sources (pathology reports, death certificates, and medical records) to APBCR for 2006 and 2008 were obtained. Duplicate cases shared among the three sources were identified based on similarity of first name, last name and father's names. A log-linear model was used to estimate number of missed cases and to control for dependency among sources. A total of 218 new cases of lung cancer was reported by three sources after removing duplicates. The estimated completeness calculated by log-linear method was 26.4 for 2006 and 27.1 for 2008. The completeness differed according to gender. In men, the completeness was 26.0% for 2006 and 28.1 for 2008. In women, the completeness was 36.5% for 2006 and 46.9 for 2008. In conclusion, none of the three sources can be considered as a reliable source for accurate cancer incidence estimation.
Highlights
Lung cancer is known as one of the most important public health problems because of its high incidence rate, rapid progression, and poor prognosis (Montazeri et al, 2001)
This study aims to estimate the completeness of lung cancer in every source of registry and estimate the lung cancer incidence in Ardabil province by three source capture-recapture method
The completeness of lung cancer in this study was estimated by the capture-recapture method and log-linear models
Summary
Lung cancer is known as one of the most important public health problems because of its high incidence rate, rapid progression, and poor prognosis (Montazeri et al, 2001). It is the leading cause of death due to cancer in 87 countries in men and 26 countries in women, with the latter largely restricted to high income countries(Torre et al, 2015). Completeness is defined as the proportion of incident cancer cases that is registered (Schmidtmann, 2008). Since most cancer registries employ more than one data source for case finding, Asian Pacific Journal of Cancer Prevention, Vol 17, Cancer Control in Western Asia Special Issue, 2016 225
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