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Selection In Surveys: Using Randomized Incentives To Detect And Account For Nonresponse Bias, Deniz Dutz, Ingrid Huitfeldt, Santiago Lacouture, Magne Mogstad, Alexander Torgovitsky, Winnie Van Dijk

Cowles Foundation Discussion Papers

We show how to use randomized participation incentives to test and account for nonresponse bias in surveys. We first use data from a survey about labor market conditions, linked to full-population administrative data, to provide evidence of large differences in labor market outcomes between survey participants and nonparticipants, differences which would not be observable to an analyst who only has access to the survey data. These differences persist even after correcting for observable characteristics. We then use the randomized incentives in our survey to directly test for nonresponse bias, and find evidence of substantial bias. Next, we apply a range …

Arterial Stiffness In Heart-Healthy Indigenous Tsimane Forager-Horticulturalists, Tianyu Cao, Edhitt Cortez Linares, Raul Quispe Gutierrez, Daniel Eid Rodriguez, Jesus Bani Cuata, Michael I. Miyamoto, Christopher Von Rueden, Daniel K. Cummings, Paul L. Hooper, Benjamin C. Trumble, Jonathan Stieglitz, Randall C. Thompson, Gregory S. Thomas, Hillard S. Kaplan, Daniel A. Duprez, David R. Jacobs Jr., Michael Gurven

ESI Publications

Background

Methods

Energy Expenditure And Obesity Across The Economic Spectrum, Amanda Mcgrosky, Amy Luke, Leonore Arab, Kweku Bedu-Addo, Alberto G. Bonomi, Pascal Bovet, Soren Brage, Maciej S. Buchowski, Nancy Butte, Stefan G. Camps, Regina Casper, Daniel K. Cummings, Sai Krupa Das, Sanjoy Deb, Lara R. Dugas, Ulf Ekelund, Terrence Forrester, Barry W. Fudge, Melanie Gillingham, Annelies H. Goris, Michael Gurven, Catherine Hambly, Annemiek Joosen, Peter T. Katzmarzyk, Kitty P. Kempen, William E. Kraus, Wantanee Kriengsinyos, Rebecca Kuriyan, Robert F. Kushner, Estelle V. Lambert, Christel L. Larsson, William R. Leonard, Nader Lessan, Marie Löf, Corby K. Martin, Anine C. Medin, Marian L. Neuhouser, Kirsi H. Pietilainen, Guy Plasqui, Ross L. Prentice, Susan B. Racette, David A. Raichlen, Eric Ravussin, Leanne Redman, Rebecca M. Reynolds, Eric B. Rimm, Susan Roberts, Asher Y. Rosinger, Mary H. Samuels, Srishti Sinha, J. Josh Snodgrass, Eric Stice, Ricardo Uauy, Samuel S. Urlacher, Jeanine A. Verbunt, Bruce Wolfe, Brian Wood, Xueying Zhang, Alexia J. Murphy-Alford, Cornelia J. Loechl, Jennifer Rood, Hiroyuki Sagayama, Dale A. Schoeller, Klaas R. Westerterp, William W. Wong, Yosuke Yamada, John R. Speakman, Herman Pontzer, The Iaea Dlw Database Consortium

ESI Publications

Global economic development has been associated with an increased prevalence of obesity and related health problems. Increased caloric intake and reduced energy expenditure are both cited as development-related contributors to the obesity crisis, but their relative importance remains unresolved. Here, we examine energy expenditure and two measures of obesity (body fat percentage and body mass index, BMI) for 4,213 adults from 34 populations across six continents and a wide range of lifestyles and economies, including hunter-gatherer, pastoralist, farming, and industrialized populations. Economic development was positively associated with greater body mass, BMI, and body fat, but also with greater total, basal, …

The Impact Of Insufficient Sleep On Dietary Choices And Physical Activity Behaviors: Evidence From A Randomized Cross-Over Trial, David L. Dickinson, Naomi Kakoschke, Sean P. A. Drummond

ESI Publications

The current study aimed to identify how manipulated sleep restriction affects dietary choices and physical activity (PA). Young adults were administered one week of well-rested sleep levels (WR: 8–9 h/night) and sleep-restriction (SR: 5–6 h/night) in their (naturalistic) at-home setting, using a randomized cross-over design. Participants made consequential bids for snacks/beverages following SR and WR in an auction task. Other primary outcome measures included daily self-reported dietary intake and actigraphy-measured PA. Multivariate regression analyses examined main and moderator impacts of SR on primary outcome measures. In total, 118 treatment participants completed the study (M = 20 years old, n = …

Short-Run Fiscal Effects Of Expanding Michigan's Preschool Program To Be Universal, Timothy J. Bartik

Upjohn Institute Policy Papers

This policy paper provides some updated estimates of the short-run fiscal effects of expanding Michigan’s state-funded preschool program, the Great Start Readiness Program (GSRP), to encompass universal access for Michigan’s four-year-olds. This is an update to Policy Paper No. 2025-034, which analyzed the economic and fiscal effects of Michigan’s current GSRP program as compared to the state having no program. The update takes advantage of a high-quality recent study of the economic effects of universal preschool programs in nine states, authored by Jackson, Turner, and Bastian (2025). Using the estimated economic effects of universal preschool from this recent study, …

Effects Of Fair Workweek Laws On Labor Market Outcomes, Joseph Pickens, Aaron Sojourner

Upjohn Institute Working Papers

This paper models fair workweek regulations that require employers to provide employees with (1) schedule predictability via advance notice of their work schedule and premium payments for short-notice changes, and (2) access to hours meaning they must offer open hours to existing employees before hiring new workers. We develop a theoretical model of employers’ responses to these provisions and their implications for employment. Guided by the model, we estimate the effects of recently-adopted fair workweek regulation in New York City’s fast-food sector using a synthetic difference-in-differences design. We find a null employment effect.

Du Undergraduate Showcase Abstracts: Research, Scholarship, And Creative Works, Kabe Aberle, Nadia Kako, Kateri Mcrae, Brooke Agulnek, Sky Palmon, Yasmine Ramirez, Francisca Aguirre Beltran, Ashley Juarez, Bridget Kim, Tessa Appel, Sterling Kerr, Spencer Ingley, Gabe Meyer, Robin Tinghitella, Dale Broder, Lily Baeza, Chloe Beers, Julia Coakley, Whitney Kelsey, Sydney Gainforth, Gabi Wing, Audrey Martin, Aaliyah Amore Berry, Brooke Watley, Kiruthika Venkatesan, Rachel Bienstock, Annabella Brotherston, Madison Bryant, Mia Burgener, Emma P. Lieb, Rachel A. Johnson, Jennifer L. Hoffman, Kania Campbell, Kiena Campbell, Courtney Cassidy, Sage Krzyzkowski, Maddox Jones, Skylar Abookire, Luke Hawkins, Sunnah Yoon, Andrea Chu, Yan Qin, Nyah Cubbison, Brian Gearity, Daniel Mcintosh, Mariely Cruz, Edward Garrido, Grady Dionne, Nicole Doris, Lyndsie Salvagio, Ann-Charlotte Granholm-Bentley, Anna Dymov, Hannah Eckert, Gabrielle Welsh, Erica Larson, Charlie Ernst, Anna Zhou, Sarah Watamura, Larissa Fedorovich-Klein, Georgie Fields, Kimberly A. Guevara, Aven Mccall, Ben Peltier, Feruz Yahia, Patrick Flores, Jadyn Floyd, Sophia Forcier, J. Von R. Monteza, Peter Sokol-Hessner, Gwendolyn Geiger, Scott Nichols, Camryn Gunter, Kendal Hengst, Charlie Bednarz, Issy Garside, Addison Baker, Rachel Mina, Brooke Hermanson, Amanda Klingler, William Highfill, Sydney Jaques, Kerstin Lewey, Allison Grossery, Daniel Linseman, Ethan Lim, Jagger Livengood, Owen Mantelli, Gabby Pappas, Abby Mcdonald, Madeleine Dierking, Eve Miller, Emma Loeber, Anna Marlow, Michael Kerwin, Ella Mathews, Hillary Hamann, Khadija Mohamed, Vivian Nguyen, Gabri Notov, Ifunayachi Ogbonna-Ukuku, Sunil Kumar, Charles Baysah, Sarah Olson, Don Sullivan, Anna Paradiso, Jay Parrish, Mira Pronobis, Alisha Pravasi, Kerstin Haring, Diego Ramirez, Christopher Reardon, Juliana Ramirez, Casey Doherty, Ella Kestner, Teagan Weindel, Cate Billings, Pablo Torre-Walter, Lucy Rand, Samantha Reynolds, Mark Siemens, Khadeeja Rashid, Laine Satterlee, Piper Heilbronner, Lily Pound, Ben Whitehurst, Anna Respet, Lizzie Lesoing, Sydney Hertel, Aya Saad-Masri, Brooke Ballenger, Max Proske, Hannah Rosenberg, Ellia Nakahara, Sophia Espinoza, Ivan Woolhouse, Simon Ruland, Gorkem Er, Timothy Sweeny, Melaku Saketa, Michela Schenk, Maren Lynch, Madi Hamm, Grace Schroeder, Michelle Rozenman, Rana Seif, Jackson Hall, Marisela Simental, Daniel Paredes, Aaron Mena, Preston Spaan, Evelyn Stovin, David Andrew Swartz, Anh Tran, Daniel Pittman, Luke Farchione, Emily Boyer, Ukari Verner, Lacey Conrad, Jonathan Velotta, James Weiner, Jagger Gossett, Noah Sherry, Sam Proud, Ben Block, Avi Narayana, Zoey Weiss, Alyssa Wilson, Gabrielle Walsh, David Zonana, Keely Wright, Kena Riveria, Lillybelle Deer, Jena Doom, Elysia Davis, Isabelle Yaremenko, Caitlyn Young

DU Undergraduate Research Journal Archive

Abstracts from the DU Undergraduate Research Showcase.

Using Web Scraping As A Tool To Collect School Nutrition Data, Aaron Brown

Student Works

Web scraping, a technique for collecting publicly available online data, may facilitate collecting school meal data from large, national samples of school districts in a timely, cost-effective manner. We explore its potential by examining the variation in sodium content of 2 popular entrees served through the US Department of Agriculture’s National School Lunch Program—pizza and chicken nuggets. Daily school menu data were obtained from a national sample of school districts via web scraping. Linking web scraped data to publicly available data on school districts permitted examination of entree sodium content variation across school district geographic and socioeconomic characteristics. Such …

Accounting, Marketing, And Technology Needs Of Black Women Business Owners In Pennsylvania Economically Distressed Communities, Darlene Booth-Bell

Pennsylvania Economic Review

In this study, we examine the survey and asynchronous interview responses of thirty-six Black women business owners to determine their self-identified needs in accounting, marketing, technology, and other business services such as supply chain knowledge, and technology. Our participants are located in small, economically distressed towns in Pennsylvania, where the number of families living below the poverty line is greater than the national average, and other indicators place these towns in a category of economically distressed. Respondents indicated a need for assistance with cash flow management and access to capital. Respondents also indicated a need for assistance with networking, online …

Health Insurance Benefits As A Tool For Employee Attraction And Retention: Evidence From The Nursing Industry, J. T. Garcia

Proceedings of the Jepson Undergraduate Conference on International Economics

This paper explores the critical role of employer-provided health insurance in employee recruitment and retention, focusing on the nursing industry in Iowa. As labor markets grow increasingly competitive, especially in industries such as healthcare, non-wage benefits like health insurance can be an important factor influencing job choice and employee loyalty. This paper connects labor economic theory with employment data from Iowa nursing homes, to demonstrate that health insurance can significantly enhance employee satisfaction and reduce turnover and can do so more effectively than wage increases alone. The paper argues that in professions especially with high demand, such as nursing, investment …

Constitutional Carry, Stand-Your-Ground Laws And Defensive Firearm Use, Mark P. Gius

Pennsylvania Economic Review

Over the past several years, there has been a significant increase in the number of states allowing concealed weapons carry without a permit (constitutional carry), and an increase in the number of states that have enacted stand-your-ground laws. The purpose of the present study is to determine if the enactment of constitutional carry and stand-your-ground laws have had any statistically significant effects on incidents of defensive firearm use. Using a fixed effects, negative binomial model, it was found that both constitutional carry and stand-your-ground laws resulted in an increase in the number of casualties of defensive firearm uses (injured and …

Estimating How Much Children Work: Questionnaires Versus Time Use Diaries, Juana Lamote De Grignon Pérez, Wenbin Wang, Tanay Kasyap, Matthew Henglong Luo, Jialu Tang

Discussion Papers

Current estimates of child labour often rely on questions such as, “How many hours did you work last week?” While biases in adult self-reports are well-documented in high-income countries, there is limited evidence on the accuracy of children’s responses in low- and middle-income countries (LMICs). Using data from nine LMICs, including China and India, this paper shows that time diaries report more than twice as many work hours as standard questionnaires. This discrepancy suggests that current estimates may significantly understate child labour. Moreover, certain forms of work—such as collecting water or firewood—appear to contribute to these measurement gaps.

Economic Drivers In East Texas- July 2025, Manuel Reyes-Loya, Cecilia Cuellar, Marilyn Young, Pedro Gallardo-Toledo

Hibbs Newsletter

This issue of the Hibbs Newsletter examines the key economic drivers of East Texas, highlighting trends in GDP, employment, and wages across major metropolitan areas. From 2015 to 2023, the region experienced steady economic growth, led primarily by healthcare, manufacturing, and mining industries. The report emphasizes healthcare as a dominant contributor to both employment and high-wage occupations, offering insight into the region’s evolving economic structure

Can Esg Reduce Credit Risk? An Empirical Investigation Across Asean-5 Markets, Arrafif Pratama Zaini, Maria Ulpah

The Indonesian Capital Market Review

Based on stakeholder theory and signaling theory, companies with strong ESG performance send signals to various stakeholders, thus building trust and influencing better credit risk evaluation. This study empirically examines the effect of Environmental, Social, and Governance (ESG) performance on the credit risk of non-financial public companies in ASEAN-5 countries (Indonesia, Malaysia, Philippines, Singapore, and Thailand) over the period 2019-2023. Corporate credit risk is measured using 2 main approaches: the accounting-based and market-based models. Merton's KMV model calculates the probability of default (PD) using a market-based approach. In contrast, the Altman Z-Score predicts bankruptcy risk based on financial ratios in …

Borderplex Business Barometer, Volume 9, Number 7, Thomas M. Fullerton, Steven L. Fullerton

Border Region Modeling Project

No abstract provided.

Three Essays In Development Economics, Vardaan Chawla

Dissertations and Theses Collection (Open Access)

This dissertation explores policy-relevant questions through three empirical studies on issues related to education, human capital formation, and consumer protection in developing countries. The first two chapters focus on education policies in India and examine their intended and unintended impacts on children’s schooling and labour-market outcomes. The third chapter evaluates a new approach to tackle consumer protection issues in digital finance in Uganda and Bangladesh. Across all three, this dissertation reflects an interest and understanding in advancing evidence-based policymaking in developing countries, be it in education or consumer protection.

In the first chapter, we evaluate the impact of the midday …

Factors Influencing Digital Technology Adoption And Use Among Msmes In Indonesia, Andry Manodotua Panjaitan, Niko Sudibjo, Cahya Pulupi Meilani

DLSU Business & Economics Review

The purpose of this study is to see how attitudes toward behavior, subjective norms, and digital technology literacy affect adoption intentions and their impact on digital technology usage behavior in small and medium enterprises in Indonesia. This study used 532 MSME samples and tested them using SEM PLS analysis. The test findings showed that eight proposed hypotheses were accepted, and one was rejected. Digitally literate MSME owners and leaders can increase market awareness and set clear digital transformation goals for their companies. Furthermore, with government support for technology in MSMEs, digital technology is expected to be used not just for …

Decomposing Crowding Out Effect In The Philippines: Leveraging Fiscal Policy To Drive Inclusive Growth, John Paolo R. Rivera, Mary Grace R. Agner, Viory Yvonne T. Janeo, John Angelo F. Cristobal

DLSU Business & Economics Review

Fiscal stimulus programs have substantively kept the Philippine economy afloat during crises and in facilitating recovery. In pursuing steeper growth, there is a tendency to harness fiscal policy at the expense of crowding out private investment and consumption, which defeats the ultimate purpose of such policy. Using time series analysis, we assess the degree of crowding out effect in the Philippines and its implications for the effectiveness of fiscal policy as a macroeconomic stabilization and growth driver tool. Although scholarly literature has used aggregate government spending in probing the existence of a crowding out effect on aggregate investment and consumption …

Multifaceted Skepticism: A Comprehensive Approach In Auditing Practice, Ida Ayu Budhananda Munidewi, Unti Ludigdo, Ali Djamhuri, Wuryan Andayani

DLSU Business & Economics Review

This research uses a modified grounded theory approach to understand the behavior of auditors in Indonesia who have an Eastern cultural background in applying professional skepticism. The research results reveal that auditor behavior in practice applies multifaceted skepticism. Multifaceted skepticism refers to the idea that professional skepticism in auditing is not a one-dimensional approach. That recognizes the complexity of the audit environment and the need for auditors to consider various factors when applying their skepticism. Multifaceted skepticism brings us to a less simplistic view of professional skepticism, which until now has only been seen as an on-or-off switch. Instead, this …

Social Message In Advertising And Social Change: An Empirical Investigation Of Relationships, Iqra Manzoor, Zia- Ul-Haq

DLSU Business & Economics Review

This study was carried out to investigate consumer behavior toward advertisements that convey social messages. Not many studies have focused on the social message in ads and the subjective well-being of customers regarding such ads. To study this gap, the paper examined the relationship between (a) the attitude towards the ad with a social message and the purchase intention of the consumer and (b) the purchase intention of the consumer and their subjective well-being. Structural equation modeling (SEM) was used to study the interrelationships within the proposed model. The data was collected through an experiment and qualitative survey among university …

Examining The Volunteering Behavior Of Filipino Youth Using The Extended Theory Of Planned Behavior, Reynaldo B. Bautista, Christine Joy A. Ballada, Joy Rabo

DLSU Business & Economics Review

Young people are vital human resources who can significantly contribute to social change through volunteerism. This study sought to examine Filipino youth’s volunteering behavior using an extended theory of planned behavior with behavioral modeling by family and peers as additional antecedents of volunteering intention. Participants in this study were undergraduate students of De La Salle University – Manila. A total of 438 students (60% female, 39% male, and 1% preferring not to say) aged 17 to 23 years old (M = 19.60 years, SD = 1.12) participated in the study. The scales were found to have good internal consistency reliability. …

Editor's Note, Marites Tiongco

DLSU Business & Economics Review

No abstract provided.

The Tur Nout Effect: Challenging The Median Voter Theorem, George Thomas Rogers

Theses and Dissertations

The classical Median Voter Theorem (MVT) predicts that, in a two-party system with majority rule, candidates will converge toward the ideological center to capture the median voter. This logic, grounded in spatial models of political competition, assumes full voter participation and fails to account for the growing ideological polarization in modern democracies. This thesis reevaluates the MVT by incorporating probabilistic turnout into a utility-based model of voter behavior. It theorizes that turnout is shaped not only by ideological proximity but also by expressive motivations, including both strong affinity and strong aversion to candidates. A novel measure of turnout utility is …

Harnessing Zakat To Drive Inclusive Economic Growth: Prospects And Challenges, Moh Najikhul Fajri, Andini Kusumawardhani

Journal Of Middle East and Islamic Studies

This study aims to analyze the role of zakat in promoting local inclusive economic growth in Indonesia. This research uses secondary panel data of 34 provinces during 2017-2022. The analysis techniques used in this study include the Poverty Equivalent Growth Rate (PEGR) inclusive economic growth measurement method and the Static Panel Regression Fixed Effect Model. This study concludes that zakat is proven to be an effective instrument in promoting inclusive economic growth in Indonesia, with a significant impact on income distribution even though its potential is still not optimized. Unique findings reveal that inclusive growth recovered faster than GDP post-pandemic, …

Menguji Keberadaan N-Shaped Environmental Kuznets Curve Di Indonesia Dengan Model Ardl, Ridwan Pandu Sunaryo, Erny Tajib

Jurnal Ekonomi dan Pembangunan Indonesia

The study aims to test the existence of the N-shaped Environmental Kuznets Curve (EKC) and to determine the impact of fossil energy consumption and economic activity such as industrialization, urbanization, and trade openness on CO2 emissions in Indonesia from 1971 to 2021, using Autoregressive Distributed Lag (ARDL). The results of this study show that the relationship between per capita GDP and CO2 emissions in Indonesia has a reversed N-shape. Industrialization and per-capita consumption of fossil energy have a positive impact, while trade openness has a negative impact on CO2 per-capita emissions both in the short and long term. Meanwhile, urbanization …

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 …

The Medical Check Up Result Data Collection System Function To Determine The Health Condition Of Workers At Pt. Pertamina Region Iii, Shonia Fitriananda, Mohammad Ridha

Jurnal Administrasi Bisnis Terapan

Activities carried out at PT. Pertamina (Persero) is very diverse. One of the activities is Medical Check Up under the auspices of Pertamedika, which is a health facility in PT. Pertamina (Persero) which is intended for workers to be checked for health every year with physical examination in the form of heart examination, blood tests, eye tests, and ultrasonography (USG). With the activities, it is inseparable from direct communication between the administration and workers to confirm each other about the needs and desires of workers who can be helped by the medical administration. The preparation of this academic paper task …

The Implications Of Religiosity And Complementary Determinants On The Repurchase Intention Of Halal-Certified Food In Indonesia 2024, Jihan Luthfiyyah Siregar, Nurdin Sobari

ASEAN Marketing Journal

Manuscript Type: Research Article.

Research Aims: This study applies the Theory of Planned Behavior (TPB) framework to examine the impact of religiosity on repurchase intentions for halal-certified food, incorporating factors such as subjective norms, awareness, trust, halal knowledge, halal certification, and perceived behavioral control.

Design/Methodology/Approach: Data were collected from 472 respondents through a purposive sampling survey in Indonesia, and analyzed using Structural Equation Modeling (SEM) with SmartPLS v.3.2.9.

Research Findings: A total of 20 hypotheses were tested. The findings reveal that religiosity influences the mediators—halal knowledge, halal certification, subjective norms, and perceived behavioral control—which, in turn, shape attitudes and stimulate …

Islamic Approach Analysis Sustainable Development: The Role Of Geopolitical Risk On Environmental In Indonesia, Basri -. Basri, Muh. Asharif Suleman

Journal Of Middle East and Islamic Studies

Studi ini mengkaji faktor-faktor yang mempengaruhi pembangunan berkelanjutan di Indonesia, dengan fokus pada kualitas lingkungan melalui perspektif Islam. Di tengah dinamika geopolitik global, risiko-risiko tersebut secara signifikan mempengaruhi kebijakan dan praktik lingkungan. Pendekatan Islam menawarkan kerangka kerja yang khas dengan mengintegrasikan nilai-nilai etika, spiritual, dan sosial ke dalam tata kelola lingkungan. Dengan menggunakan data deret waktu dari tahun 1992–2022 dan Model Koreksi Kesalahan Vektor (VECM), penelitian ini menganalisis hubungan jangka pendek dan jangka panjang antara risiko geopolitik, ketegasan kebijakan lingkungan, dan modal manusia terhadap kualitas lingkungan. Hasilnya menunjukkan bahwa risiko geopolitik memiliki efek jangka pendek yang signifikan tetapi tidak berdampak …

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. …