Related Experiment Video
Updated: Dec 21, 2025

Universal Screening for Prevention of Reading, Writing, and Math Disabilities in Spanish
Published on: July 18, 2020
Randomized controlled trial evaluating an intervention supporting implementation of sun safety policies in California
Kim D Reynolds1, David B Buller2, Mary K Buller2
1School of Community & Global Health, Claremont Graduate University, 675 W, Foothill Blvd., Ste. 200, Claremont, CA 91711, USA.
Abstract:
Solar ultraviolet radiation (UV) exposure is the primary risk factor for skin cancer and children receive about one-quarter of lifetime UV exposure before age 18. Thus, skin cancer prevention is essential for children. The objective of this study was to test an intervention to facilitate implementation of district sun safety policies. Elementary schools (N = 118) from 40 California public school districts with a school board-approved policy for sun safety were recruited along with one principal and teacher from each school. Elementary schools were randomly assigned to receive the 20-month Sun Safe Schools intervention (N = 58) or to a minimal informational control condition (N = 60). Principals were 47.8 and teachers 44.3 years of age and were predominately female (principals 72.7%; teachers 86.7%) and White (principals 72.0%; teachers 68.2%). The 20-month Sun Safe Schools intervention was delivered to principals and included a coaching session, telephone and email contacts, provision of resources for practice implementation, and a small grant program. The principal (N = 118) and a teacher (N = 113) at each school reported on school sun protection practices 20-months post-baseline. The schools were diverse in student characteristics (M = 64.1% free/reduced price meals; M = 54.5% Hispanic). Intervention principals reported implementing more sun safety practices overall (control M = 2.7, intervention M = 4.2, p < .005) and more practices not present in the district's policy (control M = 0.4, intervention M = 0.9, p = .005). Principals and teachers combined replicated these findings and also reported implementing more practices present in the district policy (control M = 0.9, intervention M = 1.3, p = .005). In sum, the intervention increased sun safety practices in public elementary schools. Trial Registration. This study is registered in ClinicalTrials.gov, www.clinicaltrials.gov, with the identification number of NCT03243929.
Related Concept Videos
Community Based Intervention
Foundations of Community Mental Health Programs
Central to the success of community-based interventions is the...
Group Design
Models of Health Promotion and Illness Prevention II
The agent-host-environment model states that disease results...
Study Designs in Epidemiology
Observational studies are those where the researcher does not intervene but rather observes natural variations. They include cross-sectional, cohort, and...
Levels of Health Promotion and Illness Prevention
In primary prevention, actions taken before disease onset prevent the disease from...
Randomized Experiments
Simple randomization
Simple...

