A Multi-Level Approach to Heat-Related Illness Prevention in Agricultural Workers

Heat Stress Disorders Clinical Trial

Official title:

A Multi-Level Approach to Heat-Related Illness Prevention in Agricultural Workers

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT04234802
• Other study ID #: STUDY00000238
• Secondary ID: 2U54OH007544-16
• Status: Completed
• Phase: N/A
• Start date: May 22, 2019
• Est. completion date: September 30, 2021

Study information

• Verified date: May 2022
• Source: University of Washington
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The project's primary aim is to evaluate the effectiveness of a multi-level heat prevention approach in reducing adverse heat health effects in outdoor agricultural workers

The secondary aims are to:

• Test the effectiveness of an individual-level training component designed to reduce adverse heat health effects in outdoor agricultural workers

• Evaluate the effectiveness of a workplace supervisor-level heat awareness application intended to support supervisor decisions to reduce the risk of workers experiencing adverse heat health effects

Recruitment information / eligibility

• Status: Completed
• Enrollment: 86
• Est. completion date: September 30, 2021
• Est. primary completion date: August 31, 2021
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Speak English or Spanish, live in same dwelling and work at same farm for the season, farm where participant works must agree to collaborate

Exclusion Criteria:

Related Conditions & MeSH terms

• Heat Stress Disorders

Intervention

Other:
• Heat Education and Awareness Tools
HEAT training will be delivered to agricultural workers by research staff in this study in the spring. HEAT training uses interactive approaches to engage participants and posters with visuals. Training covers types of heat-related illness and treatments, risk factors, appropriate clothing and hydration, and keeping cool in the home and community. The HEAT awareness application was developed in collaboration with Washington State University's AgWeatherNet Program to notify supervisors signed up for the service about hot weather conditions that might increase the risk for adverse health effects for workers. The HEAT awareness application is designed to allow subscribers to select weather stations of interest and view current heat indices as well as maximum daily heat indices forecasted over the following week. This information is coupled with information about health effects and prevention of adverse heat health effects. Materials are provided in English and Spanish.

Locations

Country	Name	City	State
United States	Farms (confidential)	Yakima	Washington

Sponsors (2)

Lead Sponsor	Collaborator
University of Washington	National Institute for Occupational Safety and Health (NIOSH/CDC)

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Heat-related Illness Symptoms	Heat symptoms will be assessed using a short survey conducted in Spanish or English that includes questions about heat-related illness symptoms experienced over the past week. Participants will select one or more symptoms (or select 'none') from a list.	Approximately three months
Primary	Heat Strain	The body's physiological response to heat stress. Core body temperature (degrees C) will be estimated using personal baseline temperature and continuous heart rate during work shifts on several days.	Approximately three months
Secondary	Pre/post Knowledge Assessment	Short set of multiple-choice questions based on key points addressed in the one-hour training on recognition, treatment, and prevention of heat-related illness.	Approximately three months
Secondary	Pre/post Supervisor Survey	Short set of interview questions to learn about heat safety practices and utilization of the HEAT awareness application for intervention group	Approximately three months