CHES (Certified Health Education Specialist) Practice Exam 2026 - Free Health Education Specialist Practice Questions and Study Guide

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What is the purpose of a quasi-randomized trial?

To exclude manipulation of variables.

To assign subjects using methods like assigned numbers.

A quasi-randomized trial serves a specific purpose in research methodology by utilizing methods that approximate randomization, particularly in situations where true randomization is impractical or unethical. One common method is the use of systematically assigned numbers to allocate subjects, which helps to achieve a level of group comparability. This method allows for a balance among the groups being studied, even though it does not fully eliminate all confounding factors that randomization would generally address.

Quasi-randomized trials are often employed when researchers need to investigate interventions or treatments in real-world settings while still striving to maintain some level of rigor in the study design. By assigning subjects through identifiable criteria, the trial can maintain an order and a degree of structure that helps draw more reliable conclusions as compared to completely uncontrolled studies.

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To ensure complete randomization in assignments.

To control for ethical concerns in testing.

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