A Practical Guide to Cluster Randomized Trials in School Health Research

Area of Science:

• Health Services Research
• Educational Research
• Biostatistics

Background:

• Cluster randomized trials (CRTs) offer rigorous evidence for school health programs.
• Designing and implementing CRTs in school settings presents unique challenges.

Purpose of the Study:

• To review methodological literature on CRTs.
• To identify practical applications of CRT methods in school health research.

Main Methods:

• Literature review of methodological summaries on CRTs.
• Search for practical applications in school health research.

Main Results:

• Identified 6 key issues for school health CRTs: design rationale, sample size, matching/stratification, sample definition, consent, and analysis.
• These issues are critical for successful study design, implementation, and data analysis.

Conclusions:

• School health researchers can enhance evidence quality by selecting appropriate designs and analysis methods.
• Careful consideration of sample definitions and consent procedures is essential for meeting accountability demands.