Stomach cancer incidence among males in Golestan province, Iran.

Golestan province is located in north of Iran, in the south east of Caspian Sea. Stomach cancer data were identified and collected through the 18 Pathology Laboratory centers, where male populations are referred. Using a structured questionnaire, trained personnel conducted in-person interviews to collect information on stomach cancer. Newly diagnosed cases which were detected by histologic or cytological examinations, were sent to the Cancer Registry Office of the province and to the registry unit in the Health Deputy. Age-specific rates, annual age-adjusted rates (ASRs) per 100,000 person-years were calculated using the direct methods of standardization to the world population.