Flashcards in Introduction to Case-Control Study Design Deck (9)
What is analytical epidemiology?
Comparison with another group
What are the 3 types of observational studies?
Cross-sectional surveys, cohort studies, case-control studies
What is a case-control study?
Case vs control group – looked back upon – exposed or unexposed? – compare level of exposure in cases/controls
What is a cross-sectional survey?
data collected from a population, or a representative subset, at a specific point in time
What problems are present during a case-control study?
Selection bias, information bias, confounding
What is selection bias?
Where cases are not representative of the population from which the cases came
What is information bias?
Either non-differentiated misclassification (randomly inaccurate measurement) or systemic misclassification (recall bias, assessor bias, data collection differ)
How can confounding factors be addressed?
Minimised in selection (matching confounders), adjusted for in analysis