R Hamad

Datos Biográficos

ID34456
NOMBRER Hamad
NOMBRESR
APELLIDOHamad
FIRMAHAMAD R
AFILIACIONESHarvard University
ORCID0000-0003-0730-4077
VERIFICADOSí
TOTAL DE OBRAS51
TOTAL DE CITAS79
TOTAL COMO AUTOR51
TOTAL COMO EDITOR0
PRIMER AÑO DE PUBLICACIÓN2008
AÑO MÁS RECIENTE DE PUBLICACIÓN2026
ÍNDICE H5

  • Association of pandemic-era US county-level policies with adult health and health behaviors

    Open AccessEmily C Dore, Emily Wright et al.ARTICLESSM - Population Health2026

    We examined associations of US county-level pandemic-era policies with health.•More comprehensive containment policies were linked with better physical health.•More comprehensive containment policies were linked with less alcohol use.•Findings were similar for total policy comprehensiveness scores.•These relationships varied by sex, education, race/ethnicity, and county urbanicity.

  • A cross-sectional analysis of county-level determinants of pandemic-era policy implementation

    Open AccessNatasha Williams, Natasha J Williams et al.ARTICLEFrontiers in Public Health2026

    Introduction: Local COVID-19 policies are increasingly recognized as determinants of variation in disease transmission and other health outcomes. There is significant geographic variability in policy implementation, but little understanding of factors contributing to policy variation. Data and methods: = 309 counties in 50 states across 2020-2021). Using multivariable regression, we examined the association of county characteristics with policy c…

  • Safety net program participation and churning during the Covid-19 pandemic

    Open AccessSydney Dougan, Kaitlyn E Jackson et al.ARTICLESSM - Population Health2026

    Objective: Studies of participation in US safety net programs consistently find improvements in health equity, yet few have measured multi-program participation over time, or linked these trajectories to health during the COVID-19 pandemic. This study characterizes longitudinal participation phenotypes in SNAP, WIC, and Medicaid and examines their associations with mental and physical health. Methods: We used longitudinal data from a cohort of lo…

  • Implications of Recent Federal Actions on Food Assistance Programs

    Open AccessSara N Bleich, Cindy W Leung et al.ARTICLEJAMA Health Forum2025

    This JAMA Forum discusses proposed budget cuts to the Supplemental Nutrition Assistance Program and their likely negative outcomes on public health

  • The 2024 Election and Potential Battle for the Social Safety Net

    Open AccessSara N Bleich, Benjamin D Sommers et al.ARTICLEJAMA Health Forum2025

    This JAMA Forum discusses potential changes under the Trump administration such as decreasing funding to federal nutrition programs, increasing barriers to enrollment in social safety net programs, and imposing work requirements

  • Easing Cash Assistance Rules and Breastfeeding

    Open AccessEmily C Dore, Daniel F Collins et al.ARTICLEJAMA Health Forum2025

    In this quasi-experimental study, state TANF policies that expanded eligibility, increased cash payments, and decreased administrative burdens were associated with increased breastfeeding initiation and duration. These findings inform active policymaking on antipoverty policies

  • The Association of School Racial Segregation with Health Among U.S. Youths

    Open AccessGuangyi Wang, Gabriel L Schwartz et al.ARTICLEJournal of Racial and Ethnic…2025Referencias: 3

  • County-Level Covid-19 Policy Comprehensiveness and Adult Behavioral Health during 2021

    Open AccessEmily Wright, Emily C Dore et al.ARTICLEJournal of Urban Health2025Referencias: 3

  • Trends in neighbourhood socioeconomic disadvantage and mortality disparities over three decades in Denmark

    Else Foverskov, Trine Frøslev et al.ARTICLEJournal of Epidemiology and…2025Citada por: 1Referencias: 44

    BACKGROUND: Negative associations between neighbourhood socioeconomic disadvantage and health are well documented. However, limited longitudinal evidence exists on the dynamic nature of the neighbourhood context and implications for health disparities. Using rich register data, we examined how neighbourhood disadvantage in Denmark changed over three decades and explored associations with mortality rates. METHODS: This ecological study used nation…

  • Lived Experiences of Families Navigating Safety Net Expansions and Retractions During the Pandemic

    Nicole Fernández-Viña, Lia C H Fernald et al.ARTICLEAmerican Journal of Public Health2025Referencias: 18

    Objectives. To understand the experiences of families with low income in California with pandemic safety net support expansions and retractions, including barriers to program access. Methods. Using open-ended questions, we explored the self-reported experiences of pandemic-era safety net expansions and expirations between January and June 2023 among a group of caregivers of young children (n = 44). We used the Immersion-Crystallization technique …

  • The long-term health effects of welfare reform

    Open AccessEmily C Dore, R Hamad et al.ARTICLESocial Science & Medicine2025Referencias: 69

  • Impact of the 2009 WIC revision on infant and maternal health

    Open AccessGuangyi Wang, Marianne Bitler et al.ARTICLESocial Science & Medicine2025Referencias: 32

  • Trajectories and patterns of US counties’ policy responses to the Covid-19 pandemic

    Open AccessYunyu Amy Chiang, Lucia Pacca et al.ARTICLESSM - Population Health2024

    This study is among the first to document substantial geographic and temporal variation in a variety of US county-level COVID-19-related policies, which likely contributed to health disparities during and after the pandemic. Future work should evaluate how these different policy trajectories differentially affected health and social outcomes

  • Individual and regional differences in the effects of school racial segregation on Black students’ health

    Open AccessGabriel L Schwartz, Guangyi Wang et al.ARTICLESSM - Population Health2024

    The end of court-ordered integration threatens the health of Black communities-especially in the US South. Modestly higher incomes do not appear protective against school segregation's harms. Research using larger samples and alternative measures of school segregation-e.g., between districts, instead of within districts-may further our understanding of segregation's health effects, especially in Northern states

  • Medicaid Expansion and Perinatal Health Outcomes

    Open AccessSepideh Modrek, Daniel F Collins et al.ARTICLEMaternal and Child Health Journal2024

    Study findings suggest that expanded access to more complete insurance benefits with limited cost-sharing for pregnant people, a group that already had high rates of insurance coverage, did not impact the birthing parents' and infant health outcomes examined

  • The association of increased SNAP benefits during Covid-19 with food insufficiency and anxiety among US adults

    Open AccessKaitlyn E Jackson, Amy Yunyu Chiang et al.ARTICLEPublic Health Nutrition2024

    Objectives: The COVID-19 pandemic and subsequent policy response to mitigate disease spread had far-reaching impacts on health and social well-being. In response, the Supplemental Nutrition Assistance Program (SNAP) underwent several pandemic-era modifications, including a 15 % monthly benefit increase on January 1, 2021. Research documenting the health effects of these SNAP modifications among low-income households and minoritized groups who wer…

  • Estimating the effect of timing of earned income tax credit refunds on perinatal outcomes

    Open AccessDeborah Karasek, A Batra et al.ARTICLEBMC Public Health2023

    This analysis offers a novel method to impute EITC eligibility using a probabilistic algorithm in a data set with richer sociodemographic information relative to the clinical and administrative data sets from which outcomes are drawn. These results could be used to determine the optimal intervention time point for future income supplementation policies. Future work should examine frequent income supplementation such as the minimum wage or basic i…

  • Experiences of distress and gaps in government safety net supports among parents of young children during the Covid-19 pandemic

    Open AccessAlyssa C Mooney, Alyssa Mooney et al.ARTICLEBMC Public Health2023

    Families of young children, already facing housing and economic insecurity prior to the pandemic, experienced parental burnout. To support family well-being, participants endorsed policies to remove housing barriers, and expand childcare options to mitigate job loss and competing demands on parents. Policy responses that either alleviate stressors or bolster supports have the potential to prevent distress catalyzed by future disasters or the more…

  • Comparing the health of refugee and asylee patients with that of non-refugee immigrant and US-born patients in a large Urban clinic

    Open AccessEva Raphael, Michelle Barton et al.ARTICLEBMC Public Health2023

    Objectives To compare disease burden in refugee/asylee, non-refugee immigrant, and US-born patients in the largest safety net clinic in San Francisco, California. Methods This is a retrospective chart review including 343 refugee/asylee, 450 immigrant, and 202 US-born patients in a San Francisco clinic from January 2014 to December 2017. Using electronic medical records, we compared prevalence of several diseases by immigration status. Using Pois…

  • Potential mechanisms linking poverty alleviation and health

    Open AccessR Hamad, Joseph A Yeb et al.ARTICLEBMC Public Health2023

    Our findings suggest that EITC recipients primarily use their refunds on bills and debt, as well as on household and vehicle expenses. This supports the idea of the EITC as a safety net policy which addresses key social determinants of health

  • Understanding the Predictors of Low Take-Up of the Special Supplemental Nutrition Program for Women, Infants, and Children (WIC)

    Open AccessAlice Guan, A Batra et al.ARTICLEMaternal and Child Health Journal2023

    Our study identifies groups that are less likely to take up WIC benefits for which they are eligible, thereby contributing important evidence to inform programs and policies to increase WIC participation among groups with lower take-up. As WIC evolves past the COVID-19 pandemic, special attention will be needed to ensure that resources to encourage and support the participation of racially and economically marginalized individuals are equitably d…

  • Racial and sociodemographic predictors of Covid-19 compared with influenza, appendicitis, and all-cause hospitalization

    Eva Raphael, Kristen M J Azar et al.ARTICLEEthnicity and Health2023

    Racial/ethnic and sociodemographic inequities in diagnosed COVID-19 and hospitalization differed from those for diagnosed influenza and other medical conditions, with consistently higher odds among Latine and Spanish-speaking patients. This work highlights the need for disease-specific public health efforts in at-risk communities in addition to structural upstream interventions

  • The association of neighborhood socioeconomic characteristics with cardiovascular health

    Open AccessNatasja Koitzsch Jensen, Trine Frøslev et al.ARTICLEHealth & Place2023Referencias: 6

    Neighborhood socioeconomic disadvantage is associated with cardiovascular health, although it is unclear which specific aspects of neighborhoods matter most. We leveraged a natural experiment in which refugees to Denmark were quasi-randomly assigned to neighborhoods across the country during 1986-1998, creating variation in exposure to various aspects of neighborhood disadvantage. The cohort was followed through December 2018. Exposures included …

  • The Pent-Up Demand for Breastfeeding Among US Women

    R Hamad, Daniel F Collins et al.ARTICLEAmerican Journal of Public Health2023Referencias: 9

    Objectives. To estimate changes in national breastfeeding trends immediately before and after COVID-19‒related workplace closures in early 2020. Methods. The implementation of shelter-in-place policies in early 2020, when 90% of people in the United States were urged to remain at home, represents a unique natural experiment to assess the pent-up demand for breastfeeding among US women that may be stymied by the lack of a national paid leave polic…

  • Testing mediating pathways between school segregation and health

    Open AccessGabriel L Schwartz, Amy Y Chiang et al.ARTICLESocial Science & Medicine2023Citada por: 2Referencias: 54

    School racial segregation is increasingly recognized as a threat to US public health: rising segregation in recent decades has been linked to a range of poor health outcomes for Black Americans. Key theorized mediators of these harms remain underexamined, including experiences of interpersonal and institutional racism driving increased stress, and peers' health behaviors influencing students' own. Using cross-sectional survey data on a national s…