A technology based intervention to nudge construction workers towards sun safe behaviours

Nudging construction workers towards safer behaviour

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN15888934

Enrollment

Registered

2018-01-15

Start date

2016-06-28

Completion date

Unknown

Last updated

2020-11-02

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

Conditions

Change in Vitamin D level Injury, Occupational Diseases, Poisoning Change in Vitamin D level

Interventions

Approximately 62 construction workers are recruited across 9 constructions sites in the UK (5 in Scotland and 4 in London). A randomised control crossover trial (RCCT) is used to test the interventio

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Health adults working in the construction industry and outdoors for long periods of time during the day. 2. Must have use of a smartphone to receive text messages and download an App. 3. Range of ethnic backgrounds 4. Range of ages 5. Range of professions within the industry (manual laborers and desk based office workers) 6. 18 to 62 years old

Exclusion criteria

Exclusion criteria: There is no participant exclusion criteria.

Design outcomes

Primary

Measure	Time frame
Vitamin D levels are measured using blood spot sampling at the start and end of each 21 day epoch. The extent and direction of the change will be compared between groups in each of the high UV and low UV seasons using standard statistical methods, including comparison of mean levels of 25(OH)D change, comparison of proportion in each group whose levels increase or decrease; and within individual comparisons for intervention and control periods, which will control for differences between individuals in response to UV exposure. Secondary analyses will include additional comparisons of the level and direction of change in high and low UV periods in relation to geographic area of study (Scotland or England), different types of targeted intervention, and directly to the responses to the behavioural (i.e. TPB) and risk knowledge questionnaires	—

Measure

Time frame

Vitamin D levels are measured using blood spot sampling at the start and end of each 21 day epoch. The extent and direction of the change will be compared between groups in each of the high UV and low UV seasons using standard statistical methods, including comparison of mean levels of 25(OH)D change, comparison of proportion in each group whose levels increase or decrease; and within individual comparisons for intervention and control periods, which will control for differences between individuals in response to UV exposure. Secondary analyses will include additional comparisons of the level and direction of change in high and low UV periods in relation to geographic area of study (Scotland or England), different types of targeted intervention, and directly to the responses to the behavioural (i.e. TPB) and risk knowledge questionnaires

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Secondary

Measure	Time frame
Behavioural change is measured using the Theory of Planned Behaviour at the start and end of each 21 day epoch. During the summer periods, we additionally measured personal exposure to UV radiation.	—

Countries

United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Mar 7, 2026