Details:

Journal Title:
Environmental Health Perspectives
Personal Author:
O’Lenick, Cassandra R. ; Baniassadi, Amir ; Michael, Ryan ; Monaghan, Andrew ; Boehnert, Jennifer ; ... More +
O’Lenick, Cassandra R. ; Baniassadi, Amir ; Michael, Ryan ; Monaghan, Andrew ; Boehnert, Jennifer ; Yu, Xiao ; Hayden, Mary H. ; Wiedinmyer, Christine ; Zhang, Kai ; Crank, Peter J. ; Heusinger, Jannik ; Hoel, Paige ; Sailor, David J. ; Wilhelmi, Olga V. Less -
NOAA Program & Office:
CIRES (Cooperative Institute for Research in Environmental Sciences)
Description:
Background: Despite the substantial role indoor exposure has played in heat wave–related mortality, few epidemiological studies have examined the health effects of exposure to indoor heat. As a result, knowledge gaps regarding indoor heat–health thresholds, vulnerability, and adaptive capacity persist.

Objective: We evaluated the role of indoor heat exposure on mortality and morbidity among the elderly (≥65 years of age) in Houston, Texas.

Methods: Mortality and emergency hospital admission data were obtained through the Texas Department of State Health Services. Summer indoor heat exposure was modeled at the U.S. Census block group (CBG) level using building energy models, outdoor weather data, and building characteristic data. Indoor heat–health associations were examined using time-stratified case-crossover models, controlling for temporal trends and meteorology, and matching on CBG of residence, year, month, and weekday of the adverse health event. Separate models were fitted for three indoor exposure metrics, for individual lag days 0–6, and for 3-d moving averages (lag 0–2). Effect measure modification was explored via stratification on individual- and area-level vulnerability factors.

Results: We estimated positive associations between short-term changes in indoor heat exposure and cause-specific mortality and morbidity [e.g., circulatory deaths, odds ratio per 5°C increase=1.16 (95% CI: 1.03, 1.30)]. Associations were generally positive for earlier lag periods and weaker across later lag periods. Stratified analyses suggest stronger associations between indoor heat and emergency hospital admissions among African Americans compared with Whites.

Discussion: Findings suggest excess mortality among certain elderly populations in Houston who are likely exposed to high indoor heat. We developed a novel methodology to estimate indoor heat exposure that can be adapted to other U.S. locations. In locations with high air conditioning prevalence, simplified modeling approaches may adequately account for indoor heat exposure in vulnerable neighborhoods. Accounting for indoor heat exposure may improve the estimation of the total impact of heat on health.


Keywords:
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Heat Exposure Hospitalizations Mortality
Source:
Environmental Health Perspectives 128:12 CID: 127007
DOI:
https://doi.org/10.1289/EHP6340
Document Type:
Journal Article
Place as Subject:
Texas
Rights Information:
Other
Compliance:
Submitted
Main Document Checksum:
[+]
urn:sha256:380fa06bd37253dcc4de19c56762a797a57532c61766ad395f8c219e81210f4b
Download URL:
https://repository.library.noaa.gov/view/noaa/31868/noaa_31868_DS1.pdf
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