Preventive medicine and public health : pre test self-assessment and review

Now updated to reflect the USMLE Step 2 exam, with greater emphasis on case presentations and diagnostic skills. Approximately 400 new clinical vignettes with accompanying questions (500 questions in all)--now featuring expanded answers referenced to leading textbooks or journal articles. Reviewed by McGraw-Hill's Medical Student Advisory Committee to ensure simulation of the USMLE test-taking experience. 1. Assuming that mammography has a sensitivity of 90% and a specificity of 98% and that consecutive tests are independent, what is the probability that a woman with breast cancer will have a negative yearly screening mammogram for two consecutive years?