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Which of the following study designs provides a useful way to obtain prevalence data? a. Ecologic...

Which of the following study designs provides a useful way to obtain prevalence data?

a. Ecologic study

b. Case report/case series

c. Cohort

d. Cross-sectional

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Answer #1

Answer is option d.

Cross-Sectional Study.

These are also called prevalence studies. This study is easy to conduct and are the most common study design used. The importance of the study is, its mainly focus on representative sample from the population. The main advantage of of this study is, it is possible to determine the prevalence of an outcome. This design is classified as analytical study design if it has a relationship between exposure and outcome. Cross - sectional study is most commonly used design and has an analytical component to test the association between the risk factor and disease. These studies are relatively quick way of getting an estimate of disease incidence or prevalence in a community. This study can be used to investigate many exposures and outcomes. This is useful for measuring the true case of disease in a population.

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