Historical Cohort Study: Flashcards
Descriptive or analytic?
Analytical
Observational or interventional?
Observational
What it is used to measure:
A research study in which the medical records of an alike group of individuals who differ by a certain characteristic are compares for a particular outcome.
Strengths:
Can use existing data to reconstruct a follow-up period in the past
Less time consuming than prospective cohort studies
Good for outcomes that take a long time to develop
Less expensive
Limitations:
Use existing data that may have been collect for other reasons leading to questionable quality
May not know about all relevant factors
Selection bias
Measure of Occurrence:
Incidence proportion
Incidence rate
Measure of association:
Relative risk
Risk difference