Introduction A cross-sectional study is a type of observational research design that involves analyzing data from a population, or a representative subset, at one specific point in time. It is widely used in various disciplines including epidemiology, psychology, public health, education, and […]
Retrospective Cohort Study Design, Advantages, Limitations, and Applications Introduction In epidemiology and clinical research, various study designs are employed to investigate associations between exposures and outcomes. Among these designs, the cohort study is a fundamental observational approach that follows groups of individuals […]