IMED2003 Lecture Notes - Lecture 7: Foodborne Illness, Resource Allocation, Aspirin
25 Mar 2020
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Document Summary
Definition of epidemiology: the study of the distribution and determinants of health, related events/states in specified populations, and the application of this study to the control of health problems. Identify who has the health-related state (disease: measure population disease frequency, predicting associations between an exposure and outcome, person, place and time. What do we measure in epidemiology: birth, death (mortality) If we prevent death from a disease, what is needed and where so that these patients have good quality of life. Types of populations: closed (fixed) populations, defined by a specific event so no new members, e. g. atomic bomb survivors, born in 1980 in perth, over time the cohort shrinks, as the population dies. Loses members only through death: open (dynamic) populations, e. g. population in perth, add new members through birth and immigration. 20% of persons have asthma at 30 june 2000: point vs period prevalence, point prevalence: Occurrence of disease at a specific point in time.
