HE300 Lecture Notes - Lecture 5: Migraine, Case Report, Cohort Study
Document Summary
Class objectives: to describe and understand the design of cohort studies, setting the foundation to understand the differences between study designs and under what circumstances each should be used. At an initial examination in oxford, mass. , migraine headache was found in 5 of 1,000 men aged. 30 to 35 years and in 10 of 1,000 women aged 30 to 35 years. A prevalence survey conducted from january 1 through december 31, 2012, identified 1,000 cases of schizophrenia in a city of 2 million persons. The incidence rate of schizophrenia in this population is 5 per 100,000 persons each year. Example: case series: bovine spongiform encephalopathy (bse) The researcher observes what happens to people under exposure conditions that are not manipulated. Researcher records, classifies, counts, and analyzes results. Does not involve any intervention, experimental or otherwise. Hierarchy of study designs: top = better, bottom = worse.
