Identifying Risks of COVID-19 Outbreaks in Work Settings and the Implications for Control Measures

The Chinese University of Hong Kong

Status: Completed

Conditions: Intention to Get SARS-CoV-2 Antibody Test; Intention to Get SARS-CoV-2 Vaccination

Treatments: Behavioral: Theory of planned behaviours (TPB) based intervention

Study type: Interventional

Funder types: Other

Identifiers

NCT05197673

2021.531-T

Details and patient eligibility

About

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.

Enrollment: 310 patients

Sex: All

Ages: 18+ years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• currently being employed in Hong Kong

Exclusion criteria

• who have history of physician-diagnosed cancer and sever chronic diseases

Trial design

Primary purpose: Prevention

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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310 participants in 2 patient groups

Intervention group

Experimental group

Description:

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.

Treatment:

Behavioral: Theory of planned behaviours (TPB) based intervention

Control group

No Intervention group

Description:

Control group will receive only general health information.