A Cluster Randomised Controlled Trial (cRCT) Evaluating the Effects of Cool Roofs on Mental Health Outcomes in Ahmedabad, India
试验速览
- 阶段
- 不适用
- 状态
- 进行中（未招募）
- 发起方
- 入组人数
- 800
- 试验地点
- 1
- 主要终点
- Depression
研究概览
简要总结
Ambient air temperatures in India have broken record highs. Solutions are needed to build heat resilience in communities and adapt to increasing heat from climate change. Sunlight-reflecting cool roof coatings may passively reduce indoor temperatures and energy use to protect home occupants from extreme heat. Occupants living in poor housing conditions are susceptible to increased heat exposure.
Heat exposure can instigate and worsen mental health. The worst adverse health effects are experienced in communities that are least able to adapt to heat exposure. By reducing indoor temperatures, cool roof use can promote mental wellbeing in household occupants.
The long-term research goal of the investigators is to identify viable passive housing adaptation technologies with proven health benefits to reduce the burden of heat stress in communities affected by heat. To meet this goal, the investigators will conduct a cluster-randomized controlled trial to establish the effects of cool roof use on mental health in Ahmedabad, India.
详细描述
Increasing heat exposure from climate change is causing and exacerbating heat-related illnesses in millions worldwide - particularly in low resource settings. June 2024 was the 13th consecutive hottest month on record globally - shattering previous records. Heat exposure can instigate and worsen mental health conditions, including depression, anxiety and aggression. Adaptation is essential for protecting people from increasing heat exposure. The built environment, especially homes, are ideal for deploying interventions to reduce heat exposure and accelerate adaptation efforts. However, there currently is a lack of evidence on a global scale - generated through empirical studies - guiding the uptake of interventions to reduce heat stress in low resource settings.
Sunlight-reflecting cool roof coatings passively reduce indoor temperatures and lower energy use, offering protection to home occupants from extreme heat. The investigators therefore aim to conduct a cluster-randomized controlled trial investigating the effects of cool-roof use on mental health outcomes in Ahmedabad.
The trial will quantify whether cool roofs are an effective passive home cooling intervention with beneficial health effects for vulnerable populations in Ahmedabad. Findings will inform regional policy responses on scaling cool roof implementation to protect people from increasing heat exposure driven by climate change.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- Double (Investigator, Outcomes Assessor)
盲法说明
Trial participants will be aware of the intervention to which they have been allocated, and the research fieldworkers will be aware of the intervention allocation. The trial steering committee members and trial statistician will remain blinded until the end of trial period and data collection.
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Permanent household resident.
排除标准
- •Roof damage, inaccessible or instability of roof adversely affecting cool roof coating application.
- •Participant unable to provide written/verbal informed consent.
结局指标
主要结局
Depression
时间窗: Eight measurements will be taken: one at baseline and seven over 12 months, covering three consecutive hottest months and four alternate months.
Self-reported presence and frequency of symptoms of depression assessed using aggregate score of the Patient Health Questionnaire 9 (PHQ-9). Minimum score of 0 and a maximum score of 27 with a higher score meaning a worse outcome.
次要结局
- Aggression(Eight measurements: one at baseline and seven over 12 months, covering three consecutive hottest months and four alternate months.)
- Mental Well-being(One measurement at the end of follow-up at 12 months post-intervention)
- Resilience(One measurement at the end of follow-up at 12 months post-intervention.)
- Eco-anxiety(One measurement taken at the end of follow-up at 12 months post-intervention.)
- Post-Traumatic Stress Disorder(One measurement taken at the end of follow-up at 12 months post-intervention.)
- Anxiety(One measurement at the end of follow-up at 12 months post-intervention.)
研究者
Aditi Bunker
Co-principal investigator
University of Auckland, New Zealand