I teach a lot of Epidemiology. This is a Science that goes along with Public Health and it tells us about health and disease in population. So for example, promoting physical activity, tackling obesity, making sure children are vaccinated - these are all areas of Public Health. We call this population health because we talk about these activities for many many people. Epidemiology is also used in patient focused health. That is health at the individual level. So when I teach epidemiology for patient focused health, it is usually clinical trials. What do you know about clinical trials? Most people think about new drugs? A simple clinical trial is a study of two groups of patients, who are randomised (toss of a coin so it is fair) to receive the treatment (new drug) or the standard treatment (old drug). It is a fair comparison because the patients had an equal chance of receiving the new drug or the old drug.
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