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NCT Number: NCT07500545

Community Health Adaptation & Resilience Mobilization (CHARM) HeatWise

Extreme heat events pose serious health risks, especially for communities with limited access to cooling, transportation, or social support. This study pilots and tests HEATwise, a heat preparedness program delivered at trusted community centers in Lake County, California, serving older adults, Tribal members, and people experiencing housing or economic hardship. HEATwise is a 12-week program which includes a group workshop on heat risks and preparedness, one-on-one resource navigation, a community celebration event, and a cooling and emergency supply kit. The pilot phase (2026) will assess feasibility and acceptability at three sites with approximately 60 participants. The full trial (2027-2028) will randomly assign eight sites to receive HEATwise immediately or after a delay, measuring whether the program increases protective behaviors, reduces heat-related symptoms, and strengthens resilience over 12 months.

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Key information

Conditions

Heat Illness Heat Stress Disorders Wounds and Injuries

Age range

18 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Big Valley Rancheria

Lakeport, California, 95453, United States

Location status: Recruiting

Location contact

Aliza Gevirtz

CONTACT

[email protected]

707-533-0071

Sarah Ryan

PRINCIPAL_INVESTIGATOR

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Eligible participants are adults (≥18 years) who have resided in Lake County for at least 6 months, are able to access a phone for study communications, and are willing to provide a valid secondary contact for the duration of the study.

Exclusion criteria

  • Participants must also be a recognized member or affiliate of a articipating site, referred by the site, or reside within 5 miles of the site. Individuals are excluded if another household member is already enrolled in the study, if they cannot provide a secondary or emergency contact, are unable to independently complete study activities, or plan to be away for 15 or more consecutive days during the intervention period.

Treatment and study plan

CHARM HeatWise

Behavioral

HEATWise consists of structured, facilitator-led training sessions on extreme heat preparedness and response, distribution of heat resilience kits, and community engagement activities designed to promote protective behaviors. The intervention is delivered at the cluster (site) level in community-based settings and focuses on reducing risk of heat-related illness and improving individual and community resilience.

Primary outcomes

  1. Change in Symptoms

    Time frame: 3-months post-intervention

    Change in self-reported heat-illness symptoms: "Self-reported heat stress measure". Range 0-8, with higher scores indicating higher heat stress

Secondary outcomes

  1. Change in individual and community resilience scores: "Communities Advancing Resilience Toolkit"

    Time frame: Baseline to 15-months post-enrollment (12-month follow-up period)

    35 items community resilience measure, outcome is mean score from 1-5 (strongly disagree-strongly agree); 19 items individual resilience measure - outcome is mean score from 1-5 (strongly disagree-strongly agree)

Study contacts

Contact information is provided by the study sponsor or research team.

Scarlet Sands-Bliss, MS

CONTACT

[email protected]

510-285-5500

Sponsors and collaborators

Lead sponsor

Public Health Institute, California

Other

Collaborators

  • National Heart, Lung, and Blood Institute (NHLBI)

Registry information

Official study title

Community Health Adaptation & Resilience Mobilization (CHARM) Lake County

Acronym: CHARM

Important dates

Study start
2026
Primary completion
2028
Study completion
2028
First posted
Mar 30, 2026
Registry last updated
Apr 17, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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