The use of cohort vs repeated cross-sectional sample survey data in monitoring changing breast cancer screening practices.

摘要: Abstract Background. The method used to select a study sample is key element in designing research protocol. This article explores two of the more common methods used, focusing on relative advantages and disadvantages each one. Methods. Both cohort repeated, independent cross-sectional surveys were conducted 3 years (1988-1990) Awareness Breast Cancer Screening Project follow changing breast cancer screening rates among population women 50-75 age Long Island, New York. Results. survey revealed statistically significant increases self-reports mammography use. repeated responses questions concerning knowledge, attitudes, behavior regarding comparable. An educational effect baseline itself was not seen. Conclusions. Each has with respect other. permits examination changes same individual over time less costly time-consuming perform. On other hand, does suffer from cumulative losses respondents better reflects community. findings can be guide selection an appropriate methodology for monitoring practices settings.