Public Health

Trends in Adults Body Mass Index Related to Changes in Socioeconomic Status of 201 Large Latin American Cities

Perner, Mónica Serena
Moore, Kari
Trotta, Andres
Chen, Hal
Lazo, Mariana
Sarmiento, Olga L.
Daniel Rodriguez
Alazraqui, Marcio
Diez Roux, Ana V.
2026

The prevalence of obesity has increased worldwide. The association between socioeconomic urban development in the nutritional status of the population in large cities from low and middle-income countries is unclear. Analyze how time trends in adult BMI vary across large cities and examine whether city socioeconomic status (SES) is related to adult BMI trends and whether individual level SES modifies this relationship. We analyzed different cross-sectional health surveys done between 2000 and 2019, in Argentina, Brazil, Chile, Colombia, and Mexico, compiled as part of the SALURBAL study....

High Accuracy Location Based Services CostBenefit Study: Final Report

Goodliss, Adam
Manasseh, Christian
Ekambaram, Venkatesan
Raja Sengupta
Kanafani, Adib
Ramchandran, Kannan
2011

This report presents a benefit and cost study of a Cooperative High‐Accuracy LOcation (C‐HALO) service. A High Accuracy Location service should be ubiquitous and reliable as the GPS constellation. A survey of the literature on location services reveals a body of work on the benefits of a high accuracy location service. Focusing on road travel, benefits are estimated to be between $160-$320 billion dollars over slightly more than 20 years. The benefits arise from smoother traffic flow on the roads leading to reduced travel delays, and fewer accidents leading to reduced injuries and saved...

Improving the Efficiency of Healthcare Delivery System in Underdeveloped Rural Areas

Singh, Amarjeet
Naik, Vinayak
Lal, Sangeeta
Raja Sengupta
Saxena, Deepak
Singh, Pushpendra
Puri, Ankur
2011

A low doctor-to-patient ratio in rural areas of under-developed regions results in an inefficient and expensive delivery of healthcare. Information and Communication Technology (ICT) could play an important role in improving the efficiency and making healthcare more affordable. In this position paper, we present an architectural framework to use ICT (specifically mobile technology) for efficient delivery of healthcare to masses. The proposed framework is (1) comprehensive to cover majority of critical diseases (2) sound from medical science point of view, (3) interfacable to Electronic...

Research Brief: The Changing Impacts of the COVID-19 Pandemic on Individuals and Households in the U.S.

Bouzaghrane, Mahamed Amine
Obeid, Hassan
Parker, Madeleine
Hayes, Drake
Chen, Minnie
Karen Trapenberg Frick
Daniel Rodriguez
Joan Walker
Raja Sengupta
Daniel Chatman
2021

This brief describes findings from a research effort to understand the changing impacts of the pandemic upon households from different places and backgrounds living in the United States. We investigated the effects of the pandemic along with pandemic-based restrictions and rules on people’s behavior along with their mental and emotional health, social relations, and livelihoods. Unlike other research efforts, as far as we are aware this effort is the only one to join passive data from cell phones with survey information collected from the same individuals over time. We combined these data...

Public Transit Use in the United States in the Era of COVID-19: Transit Riders’ Travel Behavior in the COVID-19 Impact and Recovery Period

Parker, Madeleine E. G.
Li, Meiqing
Bouzaghrane, Mohamed Amine
Obeid, Hassan
Hayes, Drake
Karen Trapenberg Frick
Daniel Rodriguez
Raja Sengupta
Joan Walker
Daniel Chatman
2021

COVID-19 has upended travel across the world, disrupting commute patterns, mode choices, and public transit systems. In the United States, changes to transit service and reductions in passenger volume due to COVID-19 are lasting longer than originally anticipated. In this paper we examine the impacts of the COVID-19 pandemic on individual travel behavior across the United States. We analyze mobility data from Janurary to December 2020 from a sample drawn from a nationwide smartphone-based panel curated by a private firm, Embee Mobile. We combine this with a survey that we administered to...

Tracking the State and Behavior of People in Response to COVID-1 19 Through the Fusion of Multiple Longitudinal Data Streams

Amine Bouzaghrane, Mohamed
Obeid, Hassan
Hayes, Drake
Chen, Minnie
Li, Meiqing
Parker, Madeleine
Daniel Rodriguez
Daniel Chatman
Karen Trapenberg Frick
Raja Sengupta
Joan Walker
2022

The changing nature of the COVID-19 pandemic has highlighted the importance of comprehensively considering its impacts and considering changes over time. Most COVID-19 related research addresses narrowly focused research questions and is therefore limited in addressing the complexities created by the interrelated impacts of the pandemic. Such research generally makes use of only one of either 1) actively collected data such as surveys, or 2) passively collected data. While a few studies make use of both actively and passively collected data, only one other study collects it longitudinally...

Tracking the State and Behavior of People in Response to COVID-1 19 Through the Fusion of Multiple Longitudinal Data Streams

Bouzaghrane, Mohamed
Obeid, Hassan
Hayes, Drake
Chen, Minnie
Li, Meiqing
Parker, Madeleine
Daniel Rodriguez
Daniel Chatman
Karen Trapenberg Frick
Raja Sengupta
Joan Walker
2022

The changing nature of the COVID-19 pandemic has highlighted the importance of comprehensively considering its impacts and considering changes over time. Most COVID-19 related research addresses narrowly focused research questions and is therefore limited in addressing the complexities created by the interrelated impacts of the pandemic. Such research generally makes use of only one of either 1) actively collected data such as surveys, or 2) passively collected data. While a few studies make use of both actively and passively collected data, only one other study collects it longitudinally...

Autonomous UAV-Based Structural Damage Exploration Platform for Post-Disaster Reconnaissance

Peng, Xin
Su, Gaofeng
Folk, Benjamin
Chen, ZhiQiang
Raja Sengupta
2024

Rapid structural health inspection process is essential for post-disaster reconnaissance.
Nowadays, visual inspection still dominates the practice, which is time-consuming, expensive,
and unsafe. To reduce labor costs and guarantee personnel safety, we develop a fully
autonomous UAV-based structural damage exploration platform that explores and rebuilds post disaster environment maps with limited prior information. As a result, environment maps can be
used for further damage detection and risk evaluation. The proposed platform implements a
closed-loop control strategy...

Early Pandemic Behaviors and the Role of Vaccines in Reversing Pandemic Mobility Trends: Evidence from a U.S. Panel

Obeid, Hassan
Anderson, Michael
Bouzaghrane, Mahamed Amine
Li, Meiqing
Parker, Madeleine
Hayes, Drake
Karen Trapenberg Frick
Daniel Rodriguez
Daniel Chatman
Raja Sengupta
Joan Walker
2024

The COVID-19 pandemic disrupted travel behavior and resulted in the emergence of new mobility trends. In this paper, we study the degree to which vaccines played a role in reversing pandemic-induced travel behaviors and contributed to a “return to normal.” Using five waves of original U.S.-based survey data combined with passive smartphone tracking data collected in 2020 and 2021, we show that in the early phases of the pandemic, the behavioral response of people in the United States was heterogeneous: individuals with low levels of concern about being infected with COVID-19 engaged in...

Tracking the State and Behavior of People in Response to COVID-19 Through the Fusion of Multiple Longitudinal Data Streams

Bouzaghrane, Mohamed Amine
Obeid, Hassan
Hayes, Drake
Chen, Minnie
Li, Meiqing
Parker, Madeleine
Daniel Rodriguez
Daniel Chatman
Karen Trapenberg Frick
Raja Sengupta
Joan Walker
2025

The changing nature of the COVID-19 pandemic has highlighted the importance of comprehensively considering its impacts and considering changes over time. Most COVID-19 related research addresses narrowly focused research questions and is therefore limited in addressing the complexities created by the interrelated impacts of the pandemic. Such research generally makes use of only one of either (1) actively collected data such as surveys, or (2) passively collected data from sources such as mobile phones or financial transactions. So far, only one other study collects both active and passive...