What Are the Key Types of Epidemiological Studies?
Epidemiological studies can be broadly categorized into observational and experimental studies.
- Observational studies include cohort studies, case-control studies, and cross-sectional studies. These studies observe the natural occurrence of diseases and their associated factors without intervention. - Experimental studies include randomized controlled trials (RCTs) and non-randomized trials, where the researcher manipulates one or more factors to observe their effect on health outcomes.
