Study to Assess the Effectiveness of a Heat Risk Reduction Decision Support Platform and the Barriers and Facilitators of Its Implementation With 30 US Local Health Department Sites

The goal of this clinical trial is to learn if an innovative online decision support tool (Chart) that provides localized health risk assessment for extreme heat at the census tract level helps local health departments plan and prepare for extreme heat by identifying risk drivers in their jurisdictions, highlighting interventions that are effective for their jurisdiction's risk profile, and providing information regarding intervention implementation. This trial will evaluate barriers and facilitators of the tool's implementation. The main questions it aims to answer are: 1. Does a health department using the tool have better reach, effectiveness, adoption, implementation, and maintenance of heat-health activities compared with an information-only control? 2. What are the barriers and facilitators of Chart's implementation? Researchers will compare health departments using Chart to health departments using provided heat-health information only.

NCT Number	NCT06971978
Lead Sponsor	University of Washington Collaborators: National Institute of Environmental Health Sciences (NIEHS)
Conditions	Extreme Heat, Heat Health, Extreme Heat Waves, Heat, Emergency Preparedness, Disaster Management, Disaster Planning, Disasters
Enrollment	30 participants
Start Date	2025-08-01
Primary Completion	2026-12 (estimated)
Study Completion	2027-08-31 (estimated)
Updated on ClinicalTrials.gov	2026-06-11