Please enable JavaScript.
Coggle requires JavaScript to display documents.
(Prevalance (Old + New cases), Incidence (new cases), Association Measures…
Prevalance (Old + New cases)
Crosssectional study -->only prevanlance
Issues
non-responce
slective mortality
Interpretation
Quantification
Prevalance = incidence X duration
Incidence (new cases)
Cohort design | Experimental design --> determine incidence
Cumilative incidence:
- time NOT included
Incidence density:
expressed in person-year (observation time also included)
Association Measures
Measures
OR
RR - >> horizontal caluculation
=1 NO association
greater than 1: indicate a positive association
If disease is rare OR~RR
Doen't mean causal effect
Artefactual
Confounding
Directionality
Difference (Absolute) Comparisons
Attributable Risk or Risk Difference
RR = incidence of expose/incidence of unexposed