Identifying Risks of Outbreaks in Work Settings and the Implications for Control Measures
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Enrollment
- 310
- Locations
- 1
- Primary Endpoint
- Change of intention to get vaccination of SARS-CoV-2
Study Overview
Brief Summary
Objectives: To identify core and cross-time workplace hazards and worker's exposure prevention profile towards outbreaks in three non-healthcare work settings; to evaluate effectiveness of a theory-based educational programme on improving attitude to vaccination and virus testing in workplace; to longitudinally compare attitude of willingness to vaccination, testing of SARS-CoV-2 and changes of risk profile toward outbreaks among workers.
Design: A 5-year study comprising a randomized controlled trial (RCT) and 3 parallel longitudinal studies with baseline and follow-up repeated measurements.
Setting: Non-office, mobile and office work settings. Participants: Part I is a RCT, 294 workers will be randomised to an intervention group (a theory-based education programme) and a control group with measurements repeated at 3rd, 6th and 9th month. Part II is a longitudinal quantitative study (i.e., prospective cohort study) involving 1,495 workers recruited at the baseline and followed up for 2 years. Part III is a longitudinal qualitative study involving 26 management and frontline workers. Part IV is a longitudinal workplace hygiene study involving 6 workplaces enrolled at the baseline and followed up to conduct ventilation investigation.
Intervention: Theory-based education intervention to build positive attitude of control measures towards SARS-CoV-2 outbreak.
Main outcome measure: Workplace hygiene data (airflow, air volume, etc.); willingness to vaccination and virus tests; actual uptake of SARS-CoV-2 antibody testing.
Data analyses: Multivariate regression logistic model and thematically analysed will be performed for quantitative and qualitative analysis. Intention-to-treat analysis will be employed for RCT.
Expected results: Large dataset of longitudinal measurement of willingness to vaccination/testing and actual uptake will be documented to inform policy. Educational intervention will be developed to mitigate risks of outbreaks in workplace.
Study Design
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Parallel
- Primary Purpose
- Prevention
- Masking
- None
Eligibility Criteria
- Ages
- 18 Years to — (Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
Inclusion Criteria
- •currently being employed in Hong Kong
Exclusion Criteria
- •who have history of physician-diagnosed cancer and sever chronic diseases
Arms & Interventions
Intervention group
This arm will receive TPB intervention to build positive attitudes towards COVID-19 related preventive behaviour (e.g., good compliance with infection control measures, encouraging uptake of testing and vaccination), subjective norms (tackling strategies for perceived social pressure from others or normative beliefs), and improve perceived behavioural control towards risks of outbreaks in workplace.
Intervention: Theory of planned behaviours (TPB) based intervention (Behavioral)
Control group
Control group will receive only general health information.
Outcomes
Primary Outcomes
Change of intention to get vaccination of SARS-CoV-2
Time Frame: 3rd, 6th and 9th month
A questionnaire will be used to evaluate the intention to get vaccination quantitively. This assessment will be repeated in the 3rd, 6th and 9th month. Change will be assessed among these time points.
Secondary Outcomes
- Change of intention to uptake SARS-CoV-2 antibody test(3rd, 6th and 9th month)
Investigators
Tse Lap Ah
Professor
Chinese University of Hong Kong