Epidemiology and bias

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Film 6 av 6 i forelesningsrekke på engelsk om epidemiologi.
John E. Berg explains Epidemiologi.
Epidemiology is the study of the distribution and determinants of health-related states or events (including disease), and the application of this study to the control of diseases and other health problems. Various methods can be used to carry out epidemiological investigations: surveillance and descriptive studies can be used to study distribution; analytical studies are used to study determinants.