FPH 7240 – Introduction to Epidemiology
Assignment 7 – Bias
Due: October 24, 2019 at noon
Readings: This homework is based on the “Bias” chapters in Aschengrau & Seague. For next week, please read chapters 11, “Confounding” and 13 “Effect Modification”.
A recent case-control study was designed to identify family, medical, and behavioral risk factors for ovarian cancer among African-American women. Cases were enrolled using cancer registries in several states, and controls matched by age, sex, race, and state of residence, were selected from the population using random-digit dialing including both land lines and cell phone numbers. A total of 391 cases and 640 controls provided survey data; however, not all answers were complete for all of the women.
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