Publication Date
| In 2026 | 0 |
| Since 2025 | 0 |
| Since 2022 (last 5 years) | 0 |
| Since 2017 (last 10 years) | 0 |
| Since 2007 (last 20 years) | 1 |
Descriptor
Source
| Health Education & Behavior | 1 |
Publication Type
| Journal Articles | 1 |
| Reports - Research | 1 |
Education Level
| High Schools | 1 |
| Junior High Schools | 1 |
| Middle Schools | 1 |
| Secondary Education | 1 |
Audience
Location
| California | 1 |
| Texas | 1 |
Laws, Policies, & Programs
Assessments and Surveys
What Works Clearinghouse Rating
Peer reviewed
Direct linkGlassman, Jill R.; Potter, Susan C.; Baumler, Elizabeth R.; Coyle, Karin K. – Health Education & Behavior, 2015
Introduction: Group-randomized trials (GRTs) are one of the most rigorous methods for evaluating the effectiveness of group-based health risk prevention programs. Efficiently designing GRTs with a sample size that is sufficient for meeting the trial's power and precision goals while not wasting resources exceeding them requires estimates of the…
Descriptors: Health Education, Longitudinal Studies, Correlation, Comparative Analysis
