HLTH333 Chapter 2: Chapter 2
21 Sep 2016
School
Department
Course
Professor
Document Summary
The fundamental assumption: diseases do not distribute randomly in populations. An association between 2 variables does not infer that one variable is causing the other. The power of epidemiological research to identify etiological connections in the absence of a patho understanding is clear. Analytical epidemiological studies are not concerned with the disease mechanisms but inste with disease etiology. In epidemiology, the concept of proportion relates to frequency. The law of large numbers: as the number or trials are increased, the sample mean approaches the. The law of large numbers allows the prediction of long run probabilities when the expected is known. It allows knowledge to be gained about the probabilities that underlie observed proportions. The basis of epidemiology is grounded in the law of large numbers. The proportion of a population with a disease. Point prevalence: the proportion of a population with a certain disease at a given point in time.
