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Varied Environmental Exposure Measurement Methods and Their Effects on Health Risk Assessment of Birth Outcomes
Varied Environmental Exposure Measurement Methods and Their Effects on Health Risk Assessment of Birth Outcomes
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105635
- ISBN
- 9798297962781
- DDC
- 910
- 저자명
- Ramesh, Balaji.
- 서명/저자
- Varied Environmental Exposure Measurement Methods and Their Effects on Health Risk Assessment of Birth Outcomes
- 발행사항
- [Sl] : The Ohio State University, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 210 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-05, Section: A.
- 주기사항
- Advisor: Hyder, Ayaz;Hoet, Armando.
- 학위논문주기
- Thesis (Ph.D.)--The Ohio State University, 2025.
- 초록/해제
- 요약Unsustainable human development leads to short-term health hazards like air pollution, and long-term consequences like climate change, which increase the frequency and severity hazards like extreme weather events (e.g., floods). Quantifying human exposure to these hazards is challenging due to the broad geographic impact of such hazards but is crucial for informing policies that protect human health. This dissertation applies and compares traditional exposure assessment methods with emerging/updated techniques that utilize dense networks of low-cost sensors and/or satellite observations to generate more refined exposure estimates, aimed at evaluating the relationship between environmental exposures and adverse birth outcomes (e.g., pregnancy complications, preterm birth, and low birth weight). It also provides an examination of how variations in exposure assessment methods and model configurations influence the estimation of associations between environmental exposures and birth outcomes.This dissertation investigates two environmental exposures, each in different study regions: floods caused by Hurricane Harvey in Texas in 2017, and fine particulate matter pollution (PM2.5) in Franklin County, Ohio from 2018 to 2023. Satellite-derived flood extent data were used to quantify flood exposure, while PM2.5 exposure was estimated by integrating low-cost sensor data with satellite observations using machine learning techniques. Data on birth outcomes have been collected from emergency department visits in Texas and birth certificates in Ohio. The association between the environmental exposure and adverse birth outcomes were estimated using statistical models, comparing the updated and traditional exposure assessment techniques. Additionally, the impact of geographic scale and spatial configuration of statistical models on the association between flood and adverse birth outcomes was examined.The results show that the health risk estimate for adverse birth outcomes associated with environmental exposures was similar using the updated and the traditional exposure assessment techniques. While this finding was observed for both environmental exposures assessed: floods and particulate matter pollution, for floods, the updated exposure assessment technique of combining remote-sensing products with different spatial and temporal resolutions identified additional areas where the flood-related ED visits for pregnancy complications were elevated compared to the traditional exposure assessment technique of using a single remote-sensing inundation product. For PM2.5, the updated exposure assessment technique using low-cost monitor observations integrated with satellite observations revealed a stronger association between first-trimester exposure and preterm birth compared to the traditional exposure assessment technique of PM2.5 observations from sparsely distributed EPA regulatory monitors.Additional findings revealed that using spatial models to account for spatial autocorrelation yielded nearly identical health risk estimates compared to those from non-spatial models in case of association between floods and ED visits for pregnancy complications. We have shown that this similarity could be due to the difference-in-differences study design used here, which compares changes over time between the exposed and control groups. In contrast, under a cross-sectional study design, spatial autocorrelation in model residuals led to significant differences in health risk estimates between spatial and non-spatial models.These findings advance exposure assessment methods by evaluating the emerging methods and improving our understanding of the magnitude of adverse health outcomes associated with environmental exposures. Compared to traditional approaches, the emerging methods assessed offer important advantages, especially the availability of data in near real time, which can support timely disaster response and risk assessment. The findings of this dissertation should also assist policymakers by more accurately estimating the true health risks and costs associated with health risks, which may have been underestimated by using traditional environmental exposure assessment methods. These findings should assist researchers by providing the trade-offs between different environmental exposure methods and geographic scale of analysis in terms of bias, complexity of the methods, data generation cost, and computational cost.
- 일반주제명
- Geography
- 일반주제명
- Public health
- 일반주제명
- Environmental health
- 일반주제명
- Remote sensing
- 키워드
- Floods
- 기타저자
- The Ohio State University Public Health
- 기본자료저록
- Dissertations Abstracts International. 87-05A.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■1001 ▼aRamesh, Balaji.
■24510▼aVaried Environmental Exposure Measurement Methods and Their Effects on Health Risk Assessment of Birth Outcomes
■260 ▼a[Sl]▼bThe Ohio State University▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a210 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: A.
■500 ▼aAdvisor: Hyder, Ayaz;Hoet, Armando.
■5021 ▼aThesis (Ph.D.)--The Ohio State University, 2025.
■520 ▼aUnsustainable human development leads to short-term health hazards like air pollution, and long-term consequences like climate change, which increase the frequency and severity hazards like extreme weather events (e.g., floods). Quantifying human exposure to these hazards is challenging due to the broad geographic impact of such hazards but is crucial for informing policies that protect human health. This dissertation applies and compares traditional exposure assessment methods with emerging/updated techniques that utilize dense networks of low-cost sensors and/or satellite observations to generate more refined exposure estimates, aimed at evaluating the relationship between environmental exposures and adverse birth outcomes (e.g., pregnancy complications, preterm birth, and low birth weight). It also provides an examination of how variations in exposure assessment methods and model configurations influence the estimation of associations between environmental exposures and birth outcomes.This dissertation investigates two environmental exposures, each in different study regions: floods caused by Hurricane Harvey in Texas in 2017, and fine particulate matter pollution (PM2.5) in Franklin County, Ohio from 2018 to 2023. Satellite-derived flood extent data were used to quantify flood exposure, while PM2.5 exposure was estimated by integrating low-cost sensor data with satellite observations using machine learning techniques. Data on birth outcomes have been collected from emergency department visits in Texas and birth certificates in Ohio. The association between the environmental exposure and adverse birth outcomes were estimated using statistical models, comparing the updated and traditional exposure assessment techniques. Additionally, the impact of geographic scale and spatial configuration of statistical models on the association between flood and adverse birth outcomes was examined.The results show that the health risk estimate for adverse birth outcomes associated with environmental exposures was similar using the updated and the traditional exposure assessment techniques. While this finding was observed for both environmental exposures assessed: floods and particulate matter pollution, for floods, the updated exposure assessment technique of combining remote-sensing products with different spatial and temporal resolutions identified additional areas where the flood-related ED visits for pregnancy complications were elevated compared to the traditional exposure assessment technique of using a single remote-sensing inundation product. For PM2.5, the updated exposure assessment technique using low-cost monitor observations integrated with satellite observations revealed a stronger association between first-trimester exposure and preterm birth compared to the traditional exposure assessment technique of PM2.5 observations from sparsely distributed EPA regulatory monitors.Additional findings revealed that using spatial models to account for spatial autocorrelation yielded nearly identical health risk estimates compared to those from non-spatial models in case of association between floods and ED visits for pregnancy complications. We have shown that this similarity could be due to the difference-in-differences study design used here, which compares changes over time between the exposed and control groups. In contrast, under a cross-sectional study design, spatial autocorrelation in model residuals led to significant differences in health risk estimates between spatial and non-spatial models.These findings advance exposure assessment methods by evaluating the emerging methods and improving our understanding of the magnitude of adverse health outcomes associated with environmental exposures. Compared to traditional approaches, the emerging methods assessed offer important advantages, especially the availability of data in near real time, which can support timely disaster response and risk assessment. The findings of this dissertation should also assist policymakers by more accurately estimating the true health risks and costs associated with health risks, which may have been underestimated by using traditional environmental exposure assessment methods. These findings should assist researchers by providing the trade-offs between different environmental exposure methods and geographic scale of analysis in terms of bias, complexity of the methods, data generation cost, and computational cost.
■590 ▼aSchool code: 0168.
■650 4▼aGeography
■650 4▼aPublic health
■650 4▼aEnvironmental health
■650 4▼aRemote sensing
■653 ▼aEnvironmental exposure
■653 ▼aSpatial epidemiology
■653 ▼aFine particulate matter pollution
■653 ▼aFloods
■653 ▼aAdverse birth outcomes
■653 ▼aSatellite observations
■690 ▼a0366
■690 ▼a0470
■690 ▼a0573
■690 ▼a0799
■71020▼aThe Ohio State University▼bPublic Health.
■7730 ▼tDissertations Abstracts International▼g87-05A.
■790 ▼a0168
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360904▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


