서브메뉴
검색
상세정보
Bayesian and Spatiotemporal Modeling of Infectious Diseases and Population Health.
Bayesian and Spatiotemporal Modeling of Infectious Diseases and Population Health.
상세정보
- 자료유형
- 학위논문(국외)
- 기본표목-개인명
- 표제와 책임표시사항
- Bayesian and Spatiotemporal Modeling of Infectious Diseases and Population Health.
- 발행, 배포, 간사 사항
- 발행, 배포, 간사 사항
- 형태사항
- 160 p.
- 일반주기
- Source: Dissertations Abstracts International, Volume: 87-05, Section: A.
- 일반주기
- Advisor: Hedt-Gauthier, Bethany;Nethery, Rachel C.
- 학위논문주기
- Thesis (Ph.D.)--Harvard University, 2025.
- 요약 등 주기
- 요약Infectious disease outbreak detection is a critical component of public health surveillance. However,the data and methods available for this task vary, and there is limited guidance on which method to apply to a given dataset. Additionally, outbreak detection and public health rate estimation rely on accurate population denominators, yet in the U.S., it is unclear which data sources provide the most reliable estimates. This dissertation addresses both issues by evaluating outbreak detection methods for syndromic and wastewater-based surveillance and by developing a model to estimate U.S. county populations. In Chapter 1, we present a simulation study evaluating spatio-temporal models for syndromic surveillance in low-resource settings. Conventional syndromic surveillance methods face challenges in handling missing data and often do not leverage spatio-temporal structure. We compare a baseline syndromic surveillance model, a frequentist spatio-temporal model, and a Bayesian spatio-temporal conditional autoregressive (CAR) model. The Bayesian CAR model consistently achieves high specificity across simulations, underscoring the importance of spatio-temporal modeling in syndromic surveillance. In Chapter 2, we introduce the Spatially-Weighted Ensemble for Estimation of Populations (SWEEP), a Bayesian ensemble model that combines the American Community Survey (ACS), Population Estimates Program (PEP), and WorldPop (WP) to generate intercensal population estimates. SWEEP uses spatially varying weights that adapt to geographic patterns in product accuracy. Using 2019 product estimates to predict 2020 census counts, SWEEP improves population estimates, particularly for the American Indian and Alaska Native (AIAN) population, and reveals systematic geographic variation in data accuracy. These findings demonstrate the potential of spatially adaptive ensemble modeling to improve population estimates and support more equitable disease and mortality rate estimation. In Chapter 3, we develop a wastewater-based outbreak detection method using an exponential growth model and evaluate its performance relative to clinically-defined outbreaks. Applied to countylevel COVID-19 data, this method outperforms a reproductive number (Rt)-based approach. Detection performance improves with spatial aggregation yet declines in extreme temperatures, high humidity, and after 2021. These results suggest that wastewater surveillance can reliably detect outbreaks, though its performance varies with environmental context and its evaluation depends on the quality of reference clinical data.
- 주제명부출표목-일반주제명
- 주제명부출표목-일반주제명
- 주제명부출표목-일반주제명
- 비통제 색인어
- 비통제 색인어
- 비통제 색인어
- 비통제 색인어
- 부출표목-단체명
- 기본자료저록
- Dissertations Abstracts International. 87-05A.
- 전자적 위치 및 접속
- 원문정보보기
MARC
008260219s2025 us ||||||||||||||c||eng d■001000017359192
■00520260202104847
■006m o d
■007cr#unu||||||||
■020 ▼a9798265410092
■035 ▼a(MiAaPQ)AAI32174044
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a574
■1001 ▼aLink, Nicholas B.
■24510▼aBayesian and Spatiotemporal Modeling of Infectious Diseases and Population Health.
■260 ▼a[S.l.]▼bHarvard University. ▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a160 p.
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: A.
■500 ▼aAdvisor: Hedt-Gauthier, Bethany;Nethery, Rachel C.
■5021 ▼aThesis (Ph.D.)--Harvard University, 2025.
■520 ▼aInfectious disease outbreak detection is a critical component of public health surveillance. However,the data and methods available for this task vary, and there is limited guidance on which method to apply to a given dataset. Additionally, outbreak detection and public health rate estimation rely on accurate population denominators, yet in the U.S., it is unclear which data sources provide the most reliable estimates. This dissertation addresses both issues by evaluating outbreak detection methods for syndromic and wastewater-based surveillance and by developing a model to estimate U.S. county populations. In Chapter 1, we present a simulation study evaluating spatio-temporal models for syndromic surveillance in low-resource settings. Conventional syndromic surveillance methods face challenges in handling missing data and often do not leverage spatio-temporal structure. We compare a baseline syndromic surveillance model, a frequentist spatio-temporal model, and a Bayesian spatio-temporal conditional autoregressive (CAR) model. The Bayesian CAR model consistently achieves high specificity across simulations, underscoring the importance of spatio-temporal modeling in syndromic surveillance. In Chapter 2, we introduce the Spatially-Weighted Ensemble for Estimation of Populations (SWEEP), a Bayesian ensemble model that combines the American Community Survey (ACS), Population Estimates Program (PEP), and WorldPop (WP) to generate intercensal population estimates. SWEEP uses spatially varying weights that adapt to geographic patterns in product accuracy. Using 2019 product estimates to predict 2020 census counts, SWEEP improves population estimates, particularly for the American Indian and Alaska Native (AIAN) population, and reveals systematic geographic variation in data accuracy. These findings demonstrate the potential of spatially adaptive ensemble modeling to improve population estimates and support more equitable disease and mortality rate estimation. In Chapter 3, we develop a wastewater-based outbreak detection method using an exponential growth model and evaluate its performance relative to clinically-defined outbreaks. Applied to countylevel COVID-19 data, this method outperforms a reproductive number (Rt)-based approach. Detection performance improves with spatial aggregation yet declines in extreme temperatures, high humidity, and after 2021. These results suggest that wastewater surveillance can reliably detect outbreaks, though its performance varies with environmental context and its evaluation depends on the quality of reference clinical data.
■590 ▼aSchool code: 0084.
■650 4▼aBiostatistics.
■650 4▼aDemography.
■650 4▼aEpidemiology.
■653 ▼aBayesian models
■653 ▼aInfectious diseases
■653 ▼aSpatiotemporal models
■653 ▼aPopulation health
■690 ▼a0308
■690 ▼a0766
■690 ▼a0938
■71020▼aHarvard University▼bBiostatistics.
■7730 ▼tDissertations Abstracts International▼g87-05A.
■790 ▼a0084
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359192▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.



한글
ENG
日本
中文
Việt Nam