PUBHLTH 1 Lecture Notes - Lecture 13: Newborn Screening, Risk Perception, Mammography
Document Summary
Statistics: making sense of uncertainty statistics is: the numbers that describe the health of the population, the science used to interpret these numbers. The uncertainty of science: most science is of a probable nature, science is ongoing studies may contradict each other, the science of statistics can quantify the degree of uncertainty. Probability: the probable is what usually happens. Power of a study: the probability of finding an effect if there is, in fact, an effect, large numbers confer power. Statistics of screening tests: examples of screening: mammography for breast cancer hiv tests newborn screening. Sensitivity vs. specificity: false positive vs. false negative, in the arena of spousal relations: a wife notices lipstick on a husband"s shirt collar (a positive test) and worries about marital infidelity. But she later verifies that her husband actually encountered his aunt jane at a lunch break at a local fast food outlet.
