Skip to content

A Randomized Control Trial of Sun Protection Interventions for Operating Engineers

A Randomized Control Trial of Sun Protection Interventions for Operating Engineers

Status
Completed
Phases
Phase 2Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01804595
Enrollment
357
Registered
2013-03-05
Start date
2012-02-29
Completion date
2013-12-31
Last updated
2014-05-20

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Skin Cancer Prevention

Keywords

Worksite intervention, Sun protection intervention, Operating Engineers

Brief summary

This is a randomized controlled trial testing the efficacy of 4 sun protection interventions--education only; education and mailed sunscreen; education and text message reminders; and education, mailed sunscreen, and text message reminders--among Michigan Operating Engineers. Pre- and post-intervention surveys will be collected to determine changes in sunscreen use and sun burning, the primary outcome variables. The investigators hypothesize that all interventions will increase sunscreen use and reduce burning and that the education-only intervention will have the least effect of the 4 interventions while the education, mailed sunscreen, and text messaging arm will have the greatest effect.

Detailed description

The education intervention will be provided during regularly scheduled safety training sessions, and the text messages and mailed sun screen (SPF30)interventions will be offered during the summer when UV rays are at their highest. Inclusion criteria are Operating Engineers who:1)are greater than 18 years of age; 2) are interested in enrolling in the sun protection study; 3) own a cell-phone that accepts text messages; and 4) are willing to share their phone number with the study team. Based on power analysis, 256 subjects are needed to have 80% power to detect medium sized effects on primary outcomes. Accounting for a 20% attrition rate, 320 subjects will be recruited. The analyses will include: a) paired t-tests to determine changes over time (from pre-intervention to post-intervention) in outcome variables (sunscreen use and burning) separately in the 4 intervention groups, b) Repeated Measures Analysis of Variance (RM-ANOVA) to compare the changes in outcomes across the 4 groups, and c) t-tests on change scores as follow-ups to the RM-ANOVA to determine exactly which groups differ from each other. Sub-analyses will explore if particular subgroups of Operating Engineers (e.g., demographic, heath behavior, and job type subgroups) differ in sunscreen use and sun burning pre-and post-intervention.

Interventions

OTHERSunscreen
BEHAVIORALText-Message Reminders
OTHERSunscreen and Text Message Reminders
BEHAVIORALEducation

Sponsors

Blue Cross Blue Shield of Michigan Foundation
CollaboratorOTHER
University of Michigan
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

* greater than 18 years of age * interested in enrolling in the sun protection study * owning a cell-phone that accepts text messages * willing to share their phone number with the study team

Design outcomes

Primary

MeasureTime frameDescription
Sunscreen useBaselineSubjects will complete a baseline survey during safety training sessions in Winter when they get the educational intervention. In the past summer, on the days when you were outside in the sunlight, how often did you use sun block (never, some of the time, about half the time, most of the time, always)?
Sun BurningBaselineSubjects will complete a baseline survey during safety training sessions in Winter when they get the educational intervention. On average, how many times did you get a sunburn this past summer (0, 1, 2, 3, 4 or more times)?

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 24, 2026