Evolución de las tasas de mortalidad por cáncer de mama en Rosario, Argentina. Asociación con factores socioeconómicos / Mortality rate trends for breast cancer in Rosario, Argentina. Association with socioeconomic factors

RESUMO

This report is based on data from death certificates of all women whose cause of death was breast cancer, residents in Rosario City, during two 5-year-periods: 1977-81 and 1988-92, in order to know these rates evolution. Deaths, which were allocated to the last residence of the decedents, were aggregated into the 22 census areas of the city. Age-standardized mortality rates (SMR) by area were correlated with socioeconomic variables. The SMR for the whole city was not different in the two studied periods: 38000 and 36000, respectively. However, while small changes were found in the high socioeconomic areas, important increments were found in the poorest ones, mainly in postmenopausal women. Consequently, geographic correlations also changed between the two studied periods. While in the first period negative correlations were found with variables considered as socioenvironmental pointers, such as fertility and infant mortality rates, these associations were positive in the last one.