Epidemiology studies

Epidemiology studies - =disease 1 Casedefinition 2...

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Framingham Heart Study – prospective cohort study  Anything that negatively impacts health = disease 1. Case definition 2. Measure incidence + prevalence  (incidence = #people who get disease over period of time/#people at risk during period of  time) (prevalence = #people with disease/#people at risk)  3. who (sex, age, occupation, race) when (season/year. Long-term trends. Elapsed time since exposure – epidemic curve) where (neighborhood, latitude/climate, urban v. rural) Observational – cohort (retrospective or prospective). Case control (retrospective) Intervention – clinical trials  Ex. of retrospective cohort: looking at disease and exposure of nuclear radiation Ex. of prospective cohort: Framingham Heart Study  Relative Risk: risk of lung cancer among heavy smokers/risk of lung cancer among non-smokers =  proportion If the RR = 1, it isn’t related 
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  • Spring '14
  • PersisColeman
  • Harshad number, prospective cohort study, Framingham Heart Study

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