Econometrics Commons^™

Assessing Healthcare Access Among Overweight And Obese Individuals In Türkiye Using Latent Variable Modeling, Banu Beyaz Sipahi

Makara Journal of Health Research

Background: Overweight and obesity are critical determinants of healthcare access, yet evidence on how the COVID-19 pandemic reshaped these dynamics in Türkiye remains limited. This study investigates whether the early post-pandemic recovery period altered healthcare access patterns for individuals with excess weight.

Methods: Using nationally representative microdata from the 2014, 2016, 2019, and 2022 Turkish Health Surveys, we constructed a latent Healthcare Access Index based on six indicators of unmet care needs. Probit models were estimated to assess associations between BMI categories and healthcare access, controlling for socioeconomic and demographic factors. The 2022 wave serves as the early …

Spatial Analysis Of Maize Yields And Household Dietary Diversity In Sub-Saharan Africa: Causal Evidence From A Machine Learning Instrument, Addi Joof

Master's Theses

MAIZE YIELDS AND HOUSEHOLD DIETARY DIVERSITY IN SUB-SAHARAN AFRICA: EVIDENCE ON THE CAUSAL EFFECT FROM A MACHINE LEARNING INSTRUMENT

Addi Joof, University of San Francisco, May 2026

This paper provides estimates of the effect of maize yield on household dietary diversity across seven Sub-Saharan African countries, using data from 36,474 maize-growing households in the Living Standards Measurement Study Integrated Surveys on Agriculture (LSMS-ISA) panels for the period 2008--2021. OLS estimates which include district and country-by-wave fixed effects yield a positive and significant coefficient of 0.070 (SE = 0.006, p < 0.001), implying that a 10 percent increase in maize yield raises the Household Dietary Diversity Score (HDDS) by approximately 0.007 food groups. Because self-reported yields are subject to classical measurement error and unobserved household characteristics confound the OLS estimate, we construct an instrumental variable using a Random Forest model trained on satellite-derived agro-environmental features including the Enhanced Vegetation Index, Normalized Difference Vegetation Index, Growing Degree Days, precipitation, and soil moisture obtained from Google Earth Engine at the GPS-coordinate-by-year level. Our preferred 2SLS specification, which adds region fixed effects to absorb persistent sub-national geographic variation, returns a positive point estimate of 0.217 (SE = 0.206; 95% CI: -0.19 to +0.63, p = 0.294) larger than OLS and consistent with downward attenuation bias, but imprecisely estimated and statistically indistinguishable from zero at conventional levels. We interpret the OLS estimate of 0.070 as a credible lower bound on the true effect, with the IV evidence pointing to a moderately larger but uncertain magnitude. Heterogeneity analysis reveals a declining gradient across consumption quintiles the effect is strongest among the poorest households (Q1: 0.055, p < 0.01) and diminishes with wealth (Q5: 0.015, not significant) while showing no gradient across market-integration levels. These patterns are consistent with own-consumption, rather than market income from surplus sales, as the primary pathway from yield to dietary diversity. OLS estimates are positive and significant in five of six estimable countries. The findings suggest that maize yield improvements can serve as a nutrition co-investment, particularly for subsistence-oriented smallholders, though the available data do not permit a sharp causal quantification of the effect size.

Keywords: dietary diversity, maize yields, instrumental variables, Sub-Saharan Africa, LSMS-ISA, satellite …

The Effects Of Private Equity Ownership Of Acute Care Hospitals On Patient Experience, Abigail M. Huffman

Theses and Dissertations

In 10 years, private-equity firms' share of hospitals has grown from 2-3% to 8%.  Using data from two sources: the Hospital Consumer Assessment of Healthcare Providers and Systems (HCAHPS) patient surveys and the Private Equity Stakeholder Project (PESP), I demonstrate a causal effect of private-equity ownership on patient satisfaction using difference-in-difference methods.

The Effect Of Prenatal Substance Use Policies On Women's Well-Being, Zukruf Alam

Theses and Dissertations

This paper examines the effects of punitive and priority treatment policies relating to the use of illicit substances during pregnancy on women's health and health-related behavior. Punitive interventions criminalize substance use during pregnancy, which can even lead to termination of parental rights. In contrast, priority treatment policies support pregnant women and grant them priority access to substance use disorder treatment programs. I use staggered difference-in-differences methods and data from the Behavioral Risk Factor Surveillance System data from 2004 to 2018 to estimate the impact of prenatal substance use policies on women's mental health, physical health, self-reported poor health, and cigarette …

Air Pollution And Self-Reported Health Outcomes In The United States, Alina Dervisevic

Theses and Dissertations

This study examines the relationship between short-term PM2.5 exposure and self-reported health outcomes among U.S. adults using BRFSS data from 2000 to 2012 linked to county-level pollution and weather data. Results show that PM2.5 exposure is associated with worse mental health and gender specific behavioral responses.

Retroactive Eligibility Waivers: Innovative Or Ineffective?, Mohamed Kacem Benyamine

Theses and Dissertations

Medicaid’s retroactive eligibility provision covers medical expenses for beneficiaries up to 90 days before the application date. Retroactive eligibility insulates uninsured, low-income households from expensive healthcare emergencies. New Hampshire, Arkansas, and Iowa recently obtained waivers to end retroactive coverage. Using a difference-in-differences design and data from the Behavioral Risk Factor Surveillance System, I evaluate whether changes in retroactive coverage affect enrollment rates and self-reported health. Removing retroactive eligibility has no statistically significant effects on insurance enrollment or self-reported health. However, it does increase rates of access to a doctor by 1.0% overall and by 1.6% for women. Removing retroactive eligibility …

Three Essays In Cpi Bias And Health Economics, Auderta Amoako-Nuamah

Graduate Theses, Dissertations, and Problem Reports (ETD)

The first essay estimates bias in the Consumer Price Index (CPI) for elderly individuals in the United States using Engel curve methodology and household-level data from the Panel Study of Income Dynamics (1999–2023). The analysis focuses on how well the CPI reflects changes in the cost of living for older Americans, with particular attention to differences by gender and marital status. Results show that from 1999–2011, the CPI overstated the increase in the cost of living for both elderly and non-elderly households. In contrast, from 1999–2023, the CPI understated cost increases, with the bias generally larger for non-elderly households. Within …

Investigating The Relationship Between Noun Classes And Plant Folk Taxonomy In Chasu Language Of Kilimanjaro Region In Tanzania, Peter Rabson Mziray

Journal of Humanities and Social Sciences

The current study investigates the relationship between noun classes and plant folk taxonomy in Chasu (G 22). The study focuses on two objectives: the first objective is to describe the plant folk taxonomy in Chasu and the second objective is to determine the relationship between noun classes and plant folk taxonomy in Chasu. Data were collected from rural villages in Same and Mwanga districts by using free listing, field interviews (jungle-walk-and-identify), and written texts containing Chasu plant names. The findings reveal that Chasu folk taxonomy reflects different ethnobotanical categories; including a unique beginner which is mmea/mimea ‘plant(s)’, and three life …

Essays On Healthcare Regulation And Industrial Regulation, Vitor C. Melo

All Dissertations

The first chapter explores differences in incentives and consequent behavior between for-profit and not-for-profit firms. I investigate a terrible choice nursing homes faced during the pandemic: isolating residents prevents deaths from COVID-19, but increases non-COVID deaths by aggravating mental illnesses such as dementia. I explore how ownership structure led to differences in isolation measures taken and in resultant health outcomes. I model decisions regarding isolation measures as a trade-off between profits and satisfying staff's demands, with not-for-profit managers more constrained in how they consume profits. The model predicts that not-for-profit facilities will have more restrictive isolation measures and, consequently, lower …

Essays On The Impact Of Childbirth On Parenthood And Childcare, Titir Dey

All Dissertations

This dissertation studies the impact of childbirth and parenthood on the labor market outcomes and decisions of parents. Of the three chapters, the first two talk about how childbirth affects the labor supply decisions of the parents and the subsequent impact on earnings. The third chapter talks about the effect of disruption in the childcare arrangements on the employment outcomes of parents during the recent COVID-19 pandemic.

The first chapter measures the short- and long-run declines (penalties) in annual earnings associated with the first childbirth for parents in the United States by exploiting the heterogeneity in their gender, educational attainment …

Pengaruh Vaksinasi Covid-19 Terhadap Kesehatan Dan Kondisi Ekonomi Masyarakat Di Indonesia, Ayu Lestari, Fauziah Zen

Jurnal Ekonomi dan Pembangunan Indonesia

The COVID-19 vaccination is considered crucial for controlling the pandemic and accelerating economic recovery. However, empirical evidence on the impact of vaccination on health and the economy at the district/city level in Indonesia remains limited. This study aims to analyze the impact of vaccination on health outcomes and economic conditions. The methodology used is a fixed effect model with monthly panel data on vaccination and health outcomes (positivity rate and recovery), as well as annual data on per capita expenditure in 514 districts/cities from January 2021 to December 2022. The results show that the first dose of vaccination significantly reduces …

Determinants Of Catastrophic Health Expenditure Of Households In Indonesia, Rafa Fayza Afrizal, Novira Hasya, Faticha Putri Harda, Wildan Avif Alfathin, Vanissa Nur Latifah, Maxent Rael Nainggolan, Fadillah Rahmah Jaelani, Estro Dariatno Sihaloho

Jurnal Ekonomi Kesehatan Indonesia

The need for healthcare services due to illness is unpredictable, thus burdening patients economically and posing a risk of catastrophic events. The percentage of households with catastrophic health expenditures is defined as out-of-pocket payments exceeding 10% of the household’s capacity to pay for healthcare. Increasing catastrophic expenditure costs can further deteriorate the household’s financial condition. This study analyzes the determinants of catastrophic health expenditures in Indonesian households. A total of 12,892 household samples from the cross-sectional Indonesian Family Life Survey (IFLS) wave 5 (2014) were used in this study. Using a logistic regression model, this study aims to identify various …

Status Sosial Ekonomi Dan Pengeluaran Oop Kesehatan Penyandang Disabilitas, Maxent Rg Nainggolan, Riki Relaksana

Jurnal Ekonomi Kesehatan Indonesia

In 2020, the number of persons with disabilities in Indonesia reached 22.97 million. One of the main challenges this population faces is the high burden of health expenditures, particularly those that are urgent and unpredictable. This study aims to analyze the influence of socioeconomic status on out-of-pocket (OOP) health expenditures among households with persons with disabilities in Indonesia. A quantitative approach was employed using secondary data from the 2022 National Socioeconomic Survey (Susenas), utilizing the core module (KOR) and the household expenditure module (KP). Data were analyzed using the two-part regression model to identify the determinants of OOP health spending. …

Behavioral Responses To The Medicare Part D Coverage Gap And Its Closure, Selene Urbatsch

Theses and Dissertations

The author examines how exposure to the Medicare Part D coverage gap affects future prescription drug use and whether the closure of the gap under the Affordable Care Act (ACA) altered beneficiary behavior. Using 2007–2019 MEPS data, the analysis compares Part D enrollees to similarly aged, privately insured individuals, producing first-differences and difference-in-differences estimates. Before the ACA, exposure to the gap was associated with 4.9 fewer prescription fills relative to comparable non-Part D individuals. After the ACA, the effect fell to a reduction of 2.2 generic fills, with no significant decline in branded use. Sudden out-of-pocket cost increases prompted sharp …

Analysis Of Systematic Trade-Offs Between Military And Healthcare Expenditure Alongside Gdp Growth Of Select Asian And Western Exporting Economies In The 21st Century, Rahul Balamurugan, Carlos Gershenson, Preethi Nanjundan, Hiroki Sayama

Northeast Journal of Complex Systems (NEJCS)

This study explores the complexity in the trade-offs between military expenditure, healthcare expenditure, and GDP growth across select Asian nations and major weapon-exporting countries, examining how nations allocate finite resources between national security and human well-being over the past two decades. Using a systems science approach, the research integrates Granger causality testing to analyze temporal and directional relationships among GDP growth, military expenditure, and healthcare expenditure, uncovering their dynamic interdependencies. The methodology includes trend and slope analysis, Granger causality testing, outlier detection, and clustering to identify heterogeneity in resource allocation strategies. Developed, weapon-exporting nations exhibit complementary trends, with strong causality …

Essays On Health Economics, Yiran Han

Electronic Theses & Dissertations (2024 - present)

The first chapter examines relationships between physicians exposed to new drugs’ clinical trials and prescribing. Clinical trials benefit patients directly by providing novel treatments, but little is known about the indirect effects of clinical trials on physician prescribing through localized knowledge spillover. This study examines whether exposure to a clinical trial of a new drug in a physician’s local geographic area affects the physician’s propensity to prescribe the drug, i.e. a localized knowledge spillover from clinical trial sites to physician. Utilizing the Medicare Part D prescribing patterns of more than 10,000 physicians across 29 new cancer drugs approved by the …

Striking A Balance: Market Shock & Responses In Automotive Components Manufacturing, Emma Lane Mcgahey

All Theses

This thesis examines the effects of extreme market shocks on supply chain dynamics within the automotive industry. Through an analysis of demand data from an automotive manufacturer to its component suppliers (January 2018 to May 2024), the study investigates the relationship between market shocks and supply chain responses, providing insights into how auto components inventory management handles downstream responses to market shocks. With supporting public data—from FRED, BLS, and the U.S. Census Bureau resources—we explore two primary relationships: the impact of market shocks on the Average Standard Deviation of Demand (SDO) and the effect of demand variability on expedited pricing …

Recruitment Of Cxcr4+Type 1 Innate Lymphoid Cells Distinguishes Sarcoidosis From Other Skin Granulomatous Diseases, S. Sati, J. Huang, A.E. Kersh, P. Jones, O. Ahart, C. Murphy, S.M. Prouty, M.L. Hedberg, V. Jain, S.G. Gregory, Leung, Denis H. Y., J.T. Seykora, M. Rosenbach, T.H. Leung

Research Collection School Of Economics

Sarcoidosis is a multiorgan granulomatous disease that lacks diagnostic biomarkers and targeted treatments. Using blood and skin from patients with sarcoid and non-sarcoid skin granulomas, we discovered that skin granulomas from different diseases exhibit unique immune cell recruitment and molecular signatures. Sarcoid skin granulomas were specifically enriched for type 1 innate lymphoid cells (ILC1s) and B cells and exhibited molecular programs associated with formation of mature tertiary lymphoid structures (TLSs), including increased CXCL12/CXCR4 signaling. Lung sarcoidosis granulomas also displayed similar immune cell recruitment. Thus, granuloma formation was not a generic molecular response. In addition to tissue-specific effects, patients with sarcoidosis …

Hiv Estimation Using Population-Based Surveys With Non-Response: A Partial Identification Approach, Oyelola A. Adegboye, Tomoki Fujii, Denis H. Y. Leung, Siyu Li

Research Collection School Of Economics

HIV estimation using data from the demographic and health surveys (DHS) is limited by the presence of non-response and test refusals. Conventional adjustments such as imputation require the data to be missing at random. Methods that use instrumental variables allow the possibility that prevalence is different between the respondents and non-respondents, but their performance depends critically on the validity of the instrument. Using Manski's partial identification approach, we form instrumental variable bounds for HIV prevalence from a pool of candidate instruments. Our method does not require all candidate instruments to be valid. We use a simulation study to evaluate and …

The Impact Of Refractive Error Correction On Harvest Productivity In The Guatemalan Coffee Sector, Bryce C. Everett

Master's Theses

Providing refractive error correction has the potential to bolster productivity within developing countries. Current literature is in agreement that interventions targeting those with uncorrected visual impairment can realize benefits in various sectors, with particular regard to agriculture. The design of this experiment attempts to derive the intent-to-treat (ITT) effect stemming from the provision of glasses to coffee harvesters in Guatemala. Methodology incorporates two distinct approaches: an ANCOVA model with basic controls and a fixed effects model with a control for farm-specific harvest trends. With daily harvest weight observations serving as a proxy for productivity, and a sample of 321 participants …

Assessing The Economic Consequences Of Sewage Overflows On California Housing Values, Nathalie M. Nyanga

Master's Projects and Capstones

Sewage overflows (SSOs) represent a critical environmental challenge in California, and the impact of SSOs on housing prices is a vital issue. The study aims to determine how the frequency of sewage overflow events affects housing price fluctuations and conduct an event study. Employing linear, lasso, ridge, and random forest regression analyses, the study predicts the severity of overflow. Notably, lasso regression emerges as the most effective model for predicting housing prices in the event of an SSO occurrence. Additionally, the event study analysis provides insights into the factors influencing housing prices.

The Effects Of Pre-Abortion Restrictions On Women's Well-Being, Reesa Sooklall

Theses and Dissertations

Eleven states require women seeking abortions to undergo mandated ultrasounds prior to the procedure while twenty-four states require women to wait either 24, 48 or 72 hours between receiving state mandated counseling and the procedure. I examine the effects of abortion restrictions on health behaviors and health care of women. I apply staggered difference-in-differences to the Behavioral Risk Factor Surveillance System data to estimate the causal effects of the two-trip mandatory waiting period (MWP) law and mandatory ultrasounds (MUS) law on women’s mental health, use of alcohol and tobacco, and whether women are obtaining routine mammograms and pap smears. The …

Hiv Estimation Using Population Based Surveys With Non-Response: A Partial Identification Approach, Oyelola A Adegboye, Tomoki Fujii, Denis H. Y. Leung, Siyu Li

Research Collection School Of Economics

HIV estimation using data from the Demographic and Health Surveys (DHS) is lim-ited by the presence of non-response and test refusals. Conventional adjustments such as imputation require the data to be missing at random. Methods that use instrumental variables allow the possibility that prevalence is different between the respondents and non-respondents, but their performance depends critically on the validity of the instru-ment. Using Manski’s partial identification approach, we form instrumental variable bounds for HIV prevalence from a pool of candidate instruments. Our method does not require all candidate instruments to be valid. We use a simulation study to evaluate and …

Driven By Change: The Impact Of Macroeconomic Shifts And Covid-19 On New Vehicle Sales, Jackson Aldrich

CMC Senior Theses

This paper examines the impact of macroeconomic factors and the COVID-19 pandemic on new vehicle sales. In order to address these two topics, a two-pronged approach was used with separate regression models. The macroeconomic variables include monthly supply of new homes, CPI for urban public transportation, unemployment rate, disposable personal income, inflation expectation, consumer sentiment, average gas prices, and total vehicle miles traveled which were regressed on total vehicle sales from 1978-2022. The regression results confirmed and supported current literature and highlighted the importance of the housing market and unemployment rate on new vehicle sales. The COVID-19 pandemic model variables …

Reducing Food Scarcity: The Benefits Of Urban Farming, S.A. Claudell, Emilio Mejia

Journal of Nonprofit Innovation

Urban farming can enhance the lives of communities and help reduce food scarcity. This paper presents a conceptual prototype of an efficient urban farming community that can be scaled for a single apartment building or an entire community across all global geoeconomics regions, including densely populated cities and rural, developing towns and communities. When deployed in coordination with smart crop choices, local farm support, and efficient transportation then the result isn’t just sustainability, but also increasing fresh produce accessibility, optimizing nutritional value, eliminating the use of ‘forever chemicals’, reducing transportation costs, and fostering global environmental benefits.

Imagine Doris, who is …

Impacts Of Rising Temperatures On Human Behavior With A Focus On Gender Differences, Stephanie Marie Emilia J. Hermoso

Master's Theses

Climate change is one of the biggest and most pressing issues the world is facing today. While its economic implications are substantial, it is also important to investigate the effects of climate change on human behavior. This paper examines the relationship of rising temperatures and its effect on an individual’s cooperative behavior – specifically egalitarianism, generosity, selfishness, and spite. This study will focus on the differences between how males and females react to the temperature. Research indicates that there are substantial behavioral differences between men and women. How do the economic decisions of men and women differ when interacted with …

Association Between Low Health Literacy And Adverse Health Behaviors In North Carolina, 2016, Manan Roy, Adam Hege, Erin D. Bouldin

Journal of Appalachian Health

Introduction: Health literacy (HL) is an urgent public health challenge facing the U.S. HL is a critical factor in health inequities and exacerbates underlying social determinants of health.

Purpose: This study assesses the association between low HL (LHL) and adverse health behaviors, which contribute to poor health.

Methods: Researchers used North Carolina’s 2016 Behavioral Risk Factor Surveillance System data, namely, the Health Literacy optional module which asks respondents to rate how difficult it is for them to get health-related advice or to understand medical information (verbal or written). Health behaviors analyzed were excessive alcohol consumption, lack of adequate exercise and …

Effects Of The Raising The Minimum Legal Purchasing Age For Tobacco On Cigarette, Cocaine And Inhalant Consumption, Ahmed Adil

Theses and Dissertations

Over the past few years, several states have passed laws that increase the minimum legal purchasing age (MLPA) for tobacco from 18 to 21 years. This study examines the impact of statewide MLPA laws on youth tobacco consumption. Using data from the 2009-2019 Youth Risky Behavior Surveys (YRBS) and a difference-in-differences approach, I find that the enactment of MLPA laws is associated with a decrease in tobacco usage among adolescents. I also find that MLPA laws have important spillover effects to other youth risky behaviors. MLPA law adoption is associated with a reduction in cocaine use and inhalant abuse.

An Analysis On How Housing Status Influences The Gut-Brain-Axis For Populations In And Around The Skid Row Area Of Los Angeles, California, Mauricio Guzman

Pitzer Senior Theses

Over recent years, the “microbiota-gut-brain axis” (MGBA) has garnered significant attention in the scientific community. Specifically, perturbations of the MGBA via stress and dietary intake have been linked to a wide-range of diseases including gastrointestinal diseases, metabolic diseases, mood disorders, and cognitive diseases. However, most studies have been solely conducted on mice models and have yet to consider the more complex, intricate systems that impact the human body. In addition, researchers have yet to consider the populations who may be most susceptible to chronic stress and negative dietary outcomes. Drawing from the fields of medical sociology, non-invasive human biology, and …

Three Essays On Health And Environmental Economics: Applications Of Spatial Econometrics And Spatial Analysis, Mohammed Syedul Islam

Graduate Theses, Dissertations, and Problem Reports (ETD)

Spatial interaction and the locational structure between observations play key roles in the field of econometrics for both cross-sectional and panel data analysis. Compared to a non-spatial econometric model, a spatial model relaxes the assumption of independency in observations. This research applies spatial and non-spatial econometrics in three different fields of applied economics: (1) drinking water and air quality violations impacts on lung and bronchus cancer incidence in the contiguous United States (U.S.); (2) spillover effects of non-pharmaceutical interventions (NPIs) on COVID-19 cases across the contiguous U.S. counties; and (3) urbanization impacts on carbon dioxide (CO₂) emissions in …