Descriptive or analytic?
Descriptive
Observational or interventional?
Observational
What it is used to measure:
Can be used to describe the distribution of a stable exposure or outcome at a specific point of time.
Strengths:
Can asses multiple exposures and outcomes at same time
Quick and inexpensive
Generate hypothesis
Describe and compare prevalence
Useful for planning
Limitations:
No temporal sequencing
Not good for rare outcomes and exposures
Not good for assessing transient or variable exposures
Measures prevalence not incidence
Measure of Occurrence:
Prevalence
Measure of Association:
Can’t calculate