ANTC67H3 Lecture Notes - Lecture 8: Epidemiology, Net Present Value, Medical Test
Document Summary
Introduction to clinical epidemiology: application of epidemiological principles and methods to the practice of clinical medicine, research is conducted to aid decision-making about treatment (and prevention disease, characteristics: Patients are the subject of research study: types of distribution, bimodal (higher the bars = the more people) Allows separation of population into those with and without disease: unimodal. More difficult to separate population into those with and without disease. Abnormal: hard to distinguish between normal and abnormal. Abnormal is cut-off point in distribution based on whether value above that cut- off point are: We can use percentile or standard deviation for cut-off (exam). Anyone above a certain point will be considered abnormal. There are no biological basis for this arbitrary cut off (risk goes up as bmi goes up. Risk is constant and does not start growing after the cut off point, but is continuous)
