ClinicalTrials.gg
CompletedNCT03513315HEATUpdated Jan 9, 2019

Heat Emergency Awareness and Treatment (HEAT)

An interventional study of Implementation of Community-based Home Heat Bundle and Regular Community Healthcare provision in Heat Illness, Heat Stroke and Heat Exhaustion, sponsored by Johns Hopkins University. Completed at 2 sites in Pakistan. Per ClinicalTrials.gov, last updated 2019-01-09.

Primary conditionHeat StrokeRegistry: Heat Stress DisordersReclassifiedWhy we changed it
Registry
Heat Stress Disorders — the first condition term the registry derived for this study.
ClinicalTrials.gg
Heat Stroke
Why
  1. The study's listed conditions name Heat Stroke, a narrower term within Heat Stress Disorders.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by Johns Hopkins University · Not applicable, Interventional, and Prevention

From the registry’s dates

  • Registered 1 year 4 months after the study started (first participant enrolled Nov 2016, registered Apr 2018).
Phase
Not applicable
Study type
Interventional
Enrollment
16,973
Allocation
Randomized
Sex
All
01

Study summary

Investigators propose an intervention trial of a comprehensive education and treatment bundle designed to reduce morbidity and mortality associated with heat-related illness for low resource settings. Two set of interventions will be developed each for emergency department and for community/home. These interventions will be developed by an internal expert group and will be customized and implemented at the home and emergency department (ED) levels, will include evidence-based educational training guidelines for ED health providers as well as educational messages targeting home and community in Karachi, Pakistan.

Read the detailed description

This study consists of a community-based and hospital-based components. The community-based study is a prospective two-arm cluster randomized controlled trial and will be implemented in 16 clusters of 1000 people located in the most central neighborhood (called "mohalla") of a Union Council. Minimum required sample size is 7120 in each group, which requires 890 subjects in each of the 16 clusters. Calculations are based on achieving 80% power to detect a difference between the group proportions of 20% from the baseline.

For the hospital component, four major hospitals will be randomized to receive operations and clinical capacity building on management of heat emergencies. The hospital sample size is limited by the availability of hospitals and their uneven distribution which are not linked to union councils in the district.

The primary outcome in the investigators' study is the frequency of emergency admissions to the hospital with all-cause mortality as a secondary outcome.

A community-based and hospital-based protocols and training materials will be developed and will serve as the intervention in this study. These will focus on education about recognizing the signs of symptoms of heat-related illness and proper response and treatment based on local resources.

Data collection will be done at baselines and post-intervention. In the community data on demographics and household characteristics will be collected. Additionally, data on deaths in households will be collected. Changes in knowledge, attitudes, and practices will be measured using a Knowledge, Attitudes, and Practices (KAP) survey pre- and post-intervention.

In the hospital, data collection will focus on emergency department admissions, visits, mortality, and heat index. Changes in physician knowledge will be measures with a KAP survey pre- and post-intervention.

02

Conditions studied

  • Heat Illness
  • Heat Stroke
  • Heat Exhaustion
  • Heat Exposure
  • Heat Syncope, Sequela
  • Heat Collapse
  • Heat
  • Heat Stroke and Sunstroke

Browse trials for

Keywords

  • Heat-related illnesses
  • Heat Illnesses
  • Community based interventions
  • heatwave
  • Pakistan
  • emergency preparedness
  • emergency medicine
  • heat stroke
  • heat exhaustion
  • urban health
03

In context

Heat Stroke Reclassified

21 studies on the registry are indexed under Heat Stroke; 10 are open to participants now.

This study's enrollment of 16,973 is above the median of 34 across 13 interventional studies indexed under Heat Stroke.

Browse Heat Stroke studies →

Lead sponsor

Johns Hopkins University is the lead sponsor of 1,815 studies on the registry; 315 are open to participants now.

Of its 208 completed or terminated interventional studies of FDA-regulated products, 144 (69%) have results posted.

Compared within Heat Stroke, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Heat Stress Disorders. The counts are of registry records indexed under each term, refreshed daily. How we classify →

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patients presenting to the emergency departments in Karachi who present with suspected heat stroke/heat exhaustion and basic information about their presentation and treatment will be obtained in the ED for May-July.
  • Community households in "Korangi District"
  • Physicians/Nurses working in the emergency department of study hospital sites

Exclusion criteria

Exclusion Criteria:

  • When a family refused to participate in the study
05

Study design

Phase
Not applicable
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
16,973 participants (actual)

Study arms

  • Experimental
    Intervention Community Clusters

    For the community-based arm of the study, 16 clusters will be randomized into intervention and control groups. Those in the intervention group will receive implementation of community-based Home Heat Bundle. This Bundle includes education from community health workers on the signs and symptoms of heat-related illness, how to prevent the illness, and when to seek treatment. In addition, the intervention group will receive SMS messaging with information about heatwaves. The education and Short Message Service (SMS) messaging will occur in March and April via meetings in households and in public spaces. There will be a total of 40 activities, each lasting approximately two hours.

    Behavioral: Implementation of Community-based Home Heat Bundle

  • Experimental
    Control Community Clusters

    Eight community clusters of 1000 population each where regular community-based healthcare services will be provided without focused interventions on identification and management of heat-related illnesses. These clusters will receive regular community healthcare provision.

    Behavioral: Regular Community Healthcare provision

Interventions

  • BehavioralImplementation of Community-based Home Heat Bundle

    This community-based intervention include a set of educational materials to increase awareness about heat-related illness and prevention with the intention of reducing the incidence of heat-related and reducing mortality associated with heat-related illness. Materials used in this intervention will include posters, brochures, in-person training, and SMS messaging.

  • BehavioralRegular Community Healthcare provision

    The community will get regular community health workers visit without the focus community mobilization and education on heat-related illnesses.

06

What researchers measure

Primary outcomes

  1. Emergency Department visits

    Total number of individuals requiring visit to an emergency department during the study period

    Time frame: 3 months

Secondary outcomes

  1. Total number of deaths (due to any cause)

    Total number of deaths in the community during the study period

    Time frame: 3 months

  2. Hospital admissions

    Total number of hospital admissions due to any cause during the study period.

    Time frame: 3 months

07

Study locations

2 sites
  • Aga Khan University
    Karachi, 74800, Pakistan
  • The Aman Foundation
    Karachi, Pakistan
08

References and documents

Publications

  • Razzak JA, Agrawal P, Chand Z, Quraishy S, Ghaffar A, Hyder AA. Impact of community education on heat-related health outcomes and heat literacy among low-income communities in Karachi, Pakistan: a randomised controlled trial. BMJ Glob Health. 2022 Jan;7(1):e006845. doi: 10.1136/bmjgh-2021-006845. PubMed 35101860 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 9, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03513315
Collaborators
Aga Khan University, Aman Foundation
Responsible party
Sponsor
First posted
May 1, 2018
Start date
Nov 30, 2016
Primary completion
Oct 30, 2018
Completion
Oct 30, 2018
Last update
Jan 9, 2019

Study contacts

Junaid A Razzak, MD PhD
principal investigator · Johns Hopkins University

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jan 2019. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion