Concepts and problems in the evaluation of screening programs.
D000328:Adult; D000367:Age Factors; D000368:Aged; D000704:Analysis of Variance; D001943:Breast Neoplasms / Q000175:diagnosis / Q000401:mortality; D002986:Clinical Trials as Topic; D019937:Diagnostic Techniques and Procedures; D005260:Female; D006801:Humans; D008875:Middle Aged; D011897:Random Allocation