Regional Changes in Hormone Therapy Use and Breast Cancer Incidence in California From 2001 to 2004

摘要

Methods.-We obtained statewide cancer registry and California Health Interview Survey (CfflS) EPHT data for almost 3 million non-Hispanic white women age 45 to 74 years, residing in California's 58 counties. We examined trends in the age-adjusted incidence of invasive female breast cancer and compared these with trends in the use of EPHT, after grouping all Calif ornia counties into three groups based on EPHT use in 2001. We also examined CHIS data on trends in screening mammography.