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Articles 241 - 270 of 2832
Full-Text Articles in Econometrics
Estimating Firm-Level Production Functions With Spatial Dependence, Pao-Li Chang, Ryo Makioka, Bo Lin Ng, Zhenlin Yang
Estimating Firm-Level Production Functions With Spatial Dependence, Pao-Li Chang, Ryo Makioka, Bo Lin Ng, Zhenlin Yang
Research Collection School Of Economics
This paper proposes a three-stage efficient GMM estimation algorithm for estimating firm-level production functions given spatial dependence across firms due to supplier-customer relationships, sharing of input markets, or knowledge spillover. The procedure builds on Ackerberg, Caves and Frazer (2015) and Wooldridge (2009), but in addition, allows the productivity process to depend on the lagged output levels and lagged input usages of related firms, and spatially correlated productivity shocks across firms, where the set of related firms can differ across the three dimensions of spatial dependence. We establish the asymptotic properties of the proposed estimator, and conduct Monte Carlo simulations to …
A Granular Investigation On The Stability Of Money Demand, Zhengyang Chen, Victor J. Valcarcel
A Granular Investigation On The Stability Of Money Demand, Zhengyang Chen, Victor J. Valcarcel
Faculty Publications
A large literature has shown money demand functions constructed from simple-sum aggregates are unstable. We revisit the controversy surrounding the instability of money demand by examining cointegrating income-money relationships with the Divisia monetary aggregates for the U.S., and compare them with their simple-sum counterparts. We innovate by conducting a more granular analysis of various monetary assets and their associated user costs. We find characterizing money demand with simple-sum measures only works well in a period preceding 1980. Divisia aggregates, their components, and their user costs provide a more reliable interpretation of money demand. Subsample analysis across 1980 and 2008 suggests …
Assessing The Recreational Charter Fishing Market In Florida: A Hedonic Price Analysis, Mehrnoosh Asadi, Pallab Mozumder, Mahadev G. Bhat
Assessing The Recreational Charter Fishing Market In Florida: A Hedonic Price Analysis, Mehrnoosh Asadi, Pallab Mozumder, Mahadev G. Bhat
Journal of Ocean and Coastal Economics
In this study we analyze the effect of a wide range of factors on the variation of recreational fishing trip prices in Florida. We collected extensive data from recreational fishing websites maintained by guides and outfitters and used different empirical methods for quantifying the relationship between trip price and various trip characteristics. The Hedonic Price model was used to estimate the implicit prices of freshwater and saltwater fishing trip characteristics. The results suggest that freshwater and saltwater anglers significantly value the lodging feature included in the fishing trip package. Moreover, saltwater anglers had a higher willingness to pay to catch …
Axiomatic Characterization Of Generalized Neo-Eu Preferences And The Falsifiability Of Ambiguity Theories, Manuel Nunez, Mark Schneider
Axiomatic Characterization Of Generalized Neo-Eu Preferences And The Falsifiability Of Ambiguity Theories, Manuel Nunez, Mark Schneider
ESI Working Papers
We introduce a new weakening of the independence axiom, co-extreme independence, which we show characterizes a class that encompasses popular ambiguity models including Hurwicz preferences, ϵ-contamination preferences, and NEOEU preferences. Importantly, our representation unifies these as forms of simple ambiguity models as we show that the Vapnik-Chervonenkis (VC) dimension of these models is either unity or increases linearly with the number of states. In contrast, standard ambiguity models characterized in the Anscombe-Aumann framework are complex ambiguity models that have a VC dimension that is either infinite or increases exponentially in the number of states. We show that simple ambiguity preferences …
A Critical Evaluation Of Loss Aversion As The Determinate Of Effort In Compensation Framing, Timothy W. Shields, James Wilhelm
A Critical Evaluation Of Loss Aversion As The Determinate Of Effort In Compensation Framing, Timothy W. Shields, James Wilhelm
ESI Working Papers
A robust finding in managerial accounting research is that participants prefer contracts framed as bonuses to economically equivalent contracts framed as penalties. Another finding is that participants put forth more effort when facing penalty contracts than equivalent bonus contracts. Both results are commonly described as due to loss aversion, an integral portion of prospect theory. We test whether loss aversion is correlated with higher effort in an experiment with two parts. In the first part, we elicit individual participants' loss aversion using two measures. In the second part of the experiment, participants choose costly effort to increase the likelihood of …
On Explaining Why The (Human) World Is Rich, Bart J. Wilson
On Explaining Why The (Human) World Is Rich, Bart J. Wilson
ESI Working Papers
The wealth of the modern world is a natural historical marvel. Explaining it has traditionally been the purview of economic historians, as exemplified by the recent book How the World Became Rich by Mark Koyama and Jared Rubin. Economic historians, though, tend to only ask process-oriented “how” questions and “by what means” questions of the Great Enrichment. The eight co-authors of Explaining Technology, who are not economic historians, engage the debate asking a different question. Their goal is to explain the exponential shape of our enrichment with a model of the combinatorial evolution of technology. With an eye toward how …
Quantifying Delay Propagation In Airline Networks, Liyu Dou, Jakub Kastl, John Lazarev
Quantifying Delay Propagation In Airline Networks, Liyu Dou, Jakub Kastl, John Lazarev
Research Collection School Of Economics
We develop a framework for quantifying delay propagation in airline networks by integrating structural modeling and machine learning methods to estimate causal effects. Using a comprehensive dataset on actual delays and a model-selection algorithm (elastic net), we estimate a weighted directed graph of delay propagation for each major airline in the United States and establish conditions under which the propagation coefficients are causal. These estimates enable a decomposition of airline performance into "luck" and "ability." Our findings indicate that luck accounts for approximately 38% of the performance difference between Delta and American Airlines in our data. Additionally, we leverage these …
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
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 …
Recruitment Of Cxcr4+ Type 1 Innate Lymphoid Cells Distinguishes Sarcoidosis From Other Skin Granulomatous Diseases, Satish Sati, Jianhe Huang, Anna E. Kersh, Parker Jones, Olivia Ahart, Christina Murphy, Stephen M. Prouty, Matthew L. Hedberg, Vaibhav Jain, Simon G. Gregory, Leung, Denis H. Y., John T. Seykora, Misha Rosenbach, Thomas H. Leung
Recruitment Of Cxcr4+ Type 1 Innate Lymphoid Cells Distinguishes Sarcoidosis From Other Skin Granulomatous Diseases, Satish Sati, Jianhe Huang, Anna E. Kersh, Parker Jones, Olivia Ahart, Christina Murphy, Stephen M. Prouty, Matthew L. Hedberg, Vaibhav Jain, Simon G. Gregory, Leung, Denis H. Y., John T. Seykora, Misha Rosenbach, Thomas 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 …
Do Participation Rates Vary With Participation Payments In Laboratory Experiments?, Huizhen Zhong, Cary Deck, Daniel J. Henderson
Do Participation Rates Vary With Participation Payments In Laboratory Experiments?, Huizhen Zhong, Cary Deck, Daniel J. Henderson
ESI Working Papers
This paper reports a series of experiments designed to evaluate how the advertised participation payment impacts participation rates in laboratory experiments. Our initial goal was to generate variation in the participation rate as a means to control for selection bias when evaluating treatment effects in common laboratory experiments. Initially, we varied the advertised participation payment to 1734 people from $5 to $15 using standard email recruitment procedures, but found no statistical evidence this impacted the participation rate. A second study increased the advertised payment up to $100. Here, we find marginally significant statistical evidence that the advertised participation payment affects …
The Influence Of Socio-Economic Constraints On Women's Economic Empowerment In Kenya: Evidence Of Wage Disparities?, Wairimu Kimani
The Influence Of Socio-Economic Constraints On Women's Economic Empowerment In Kenya: Evidence Of Wage Disparities?, Wairimu Kimani
McNair Summer Research Program
This study presents an econometric analysis of socio-economic factors which influence wage inequalities in Kenya. This study tests the hypothesis that women experience cross sectoral gender wage disparities which are influenced by cultural and social expectations. Linear, logistic, factorial regressions models and the Mann-Whitney test were utilized to identify statistical determinants of the gender-wage gap through disproportionate educational outcomes, labor outcomes, and social outcomes. The outcomes reflect that education and other demographic factors play a pivotal role in the wage and employment outcomes for women in Kenya. The results suggest that cultural implications are the main influence to the socio-economic …
When Hedge Funds Move In: Socioeconomic Consequences Of Single-Family Rentals, Hannah Misurati
When Hedge Funds Move In: Socioeconomic Consequences Of Single-Family Rentals, Hannah Misurati
All Theses
In this thesis I explore the effect of increased investment in the single-family rental sector on inequality and housing affordability. I measure the effect of the single family rental (SFR) share on Gini indices and median rental prices across the largest U.S. cities. I construct three non lagged and three lagged models for each of the two dependent variables. In my analysis of the relationship between SFR shares and inequality, I do not find a significant relationship after accounting for potential reverse causality. However, the relationship between SFR shares and rent prices is shown to be negative and significant once …
Estimating The Effect Of Nuclear Energy On A Country's Electricity Generation Mix: Fukushima As A Case Study, Sarah Elizabeth Zarrilli
Estimating The Effect Of Nuclear Energy On A Country's Electricity Generation Mix: Fukushima As A Case Study, Sarah Elizabeth Zarrilli
All Theses
In this paper, I attempt to estimate the true effects of removing nuclear energy on a country’s energy portfolio, particularly how the country substitutes to other fuel sources for electricity generation and how it impacts the country’s marginal electricity prices. In 2011, anti-nuclear sentiment that arose in Japan following the meltdown of the Fukushima prefecture’s nuclear power plant resulted in the country decreasing its nuclear electricity generation from over 30% of its total supply to 0% in under two years. I use the dramatic variation across Japan’s electricity supply regions over the denuclearization period to attempt to estimate the true …
How Are Global Trade Relationships Affected By Western Sanctions?, Colin A. Martinez
How Are Global Trade Relationships Affected By Western Sanctions?, Colin A. Martinez
All Graduate Reports and Creative Projects, Fall 2023 to Present
Do sanctions actually have an impact on their intended targets? This paper seeks to fill a gap in the existing literature on the effectiveness of sanctions by measuring potential impacts on the trade relationships of targeted states after the imposition of sanctions. To do so, it turns to a comprehensive dataset that combines all trade and sanctions data for each of 229 states, arranged in 23,132 dyads, from 2000 through 2019. It then examines 792 regressions using a hybrid fixed effects difference-in-difference model applied to twelve different types of sanctions, differentiated by the sanctioning state’s membership in certain groups of …
Measurement Reliability For Intentions To Change Behavior, Emily Schlichtig
Measurement Reliability For Intentions To Change Behavior, Emily Schlichtig
Graduate Theses and Dissertations
It is common for researchers to ask participants to associate probabilities with words, often using tools like the Likert scale to measure behavioral intentions and attitudes. However, it remains unclear what specific probabilities participants assign to the response options on a Likert scale, how much variation exists across these options, and whether these probabilities differ across various behaviors. The purpose of this paper is to explore the numeric probabilities that participants associate with different Likert scale points, to understand their perception of the variation at each point, and to compare these perceptions across three behaviors: eating more vegetables, exercising more, …
Gradient Wild Bootstrap For Instrumental Variable Quantile Regressions With Weak And Few Clusters, Wenjie Wang, Yichong Zhang
Gradient Wild Bootstrap For Instrumental Variable Quantile Regressions With Weak And Few Clusters, Wenjie Wang, Yichong Zhang
Research Collection School Of Economics
We study the gradient wild bootstrap-based inference for instrumental variable quantile regressions in the framework of a small number of large clusters in which the number of clusters is viewed as fixed, and the number of observations for each cluster diverges to infinity. For the Wald inference, we show that our wild bootstrap Wald test, with or without studentization using the cluster-robust covariance estimator (CRVE), controls size asymptotically up to a small error as long as the parameter of endogenous variable is strongly identified in at least one of the clusters. We further show that the wild bootstrap Wald test …
Exploring The Motivations And Determinants Of Farmer’S Market Consumers And Organic Specialty Crop Producers, Jane Arnold
Exploring The Motivations And Determinants Of Farmer’S Market Consumers And Organic Specialty Crop Producers, Jane Arnold
All Theses
This two-chapter thesis evaluates the motivations and determinants of the central figures in farmers’ markets and organic markets. The first chapter explores the rise of farmers’ markets popularity through an in-person survey that was designed and distributed to 274 farmers' market consumers. Logit and ordered logit regressions were used to identify the motivations and characteristics that affect the likelihood of being a frequent farmers’ market customer (visiting 5 times or more per season) and spending over $50. The second chapter investigates the organic markets for cucumber and kale, which are dominant specialty crops on today’s grocery shelves. To identify the …
Evaluating Margin Protection (Mp) Crop Insurance As A Risk Management Tool For Rice Producers In Arkansas, Kaleem Azmat Chattha
Evaluating Margin Protection (Mp) Crop Insurance As A Risk Management Tool For Rice Producers In Arkansas, Kaleem Azmat Chattha
Graduate Theses and Dissertations
Agricultural producers bear many risks, including production risks stemming from uncertainty in weather and pest pressure and price risks arising from market volatility. Federal Crop Insurance has become one of the most popular tools to manage these risks. While yield and revenue crop insurance tend to be the most popular production and price risk management tools provided by the government, participation in Margin Protection insurance lags far behind despite providing production, crop price, and input price risk protection. This study aims to uncover whether Margin Protection crop insurance is an effective risk management tool by estimating the optimal coverage level …
The Effect Of Crime On Tourism In Indonesia, Muhammad Farhan, Hera Susanti
The Effect Of Crime On Tourism In Indonesia, Muhammad Farhan, Hera Susanti
Journal of Strategic and Global Studies
Tourism sector is widely known as one of economic sectors that can be the engine of economic growth in an effort to reduce poverty in a country. However, growth in the tourism sector can be influenced by safety factors. Tourists tend to avoid tourism destination areas with high crime rates in order to avoid becoming victims of crime. This study aims to analyze the effect of crime on the number of tourist arrivals in Indonesia by using four proxies of crime, which are total crime rate, property crime rate, violent crime rate, and fraud crime rate. This study utilizes a …
Coordination Within And Across Two Cultures, Gabriele Camera, James Gilmore, Marilyn Giselle Hazlett, Jason Shachat, Bochen Zhu
Coordination Within And Across Two Cultures, Gabriele Camera, James Gilmore, Marilyn Giselle Hazlett, Jason Shachat, Bochen Zhu
ESI Working Papers
We study within- and cross-culture interaction in a Stag Hunt game, using a controlled online experiment with Chinese and American participants. We find that cross-culture interactions can have a positive impact on efficiency. American participants, particularly females, more frequently selected the efficient but risky action when facing a Chinese counterpart. Chinese male participants, instead, less frequently selected the efficient but risky action when facing an American counterpart. These behavioral asymmetries do not support the notion of cultural equivalence, nor the hypothesis that multiculturalism fosters strategic uncertainty.
Do Digital Payments Spur Gst Revenue: Indian Experience, Surender Kumar
Do Digital Payments Spur Gst Revenue: Indian Experience, Surender Kumar
Bulletin of Monetary Economics and Banking
This paper measures the effect of digital payments on enhancing goods and services tax (GST) revenue in India using monthly time-series information on tax collections and digital payments. By employing an autoregressive distributed lag cointegration framework, we find that the GST elasticity concerning digital transactions is about 0.54. The implication is that a one-standard-deviation increase in the value of digital transactions spurs GST revenue of about INR 62 billion, and a one-standard-deviation increase in index of industrial production (IIP) enhances GST revenue by about INR 8 to 12 billion. These results suggest that enhancing digital transactions is an effective way …
Impact Of Crises On Indian Financial Markets, Pami Dua, Divya Tuteja
Impact Of Crises On Indian Financial Markets, Pami Dua, Divya Tuteja
Bulletin of Monetary Economics and Banking
We investigate the effect of crises on Indian financial markets including the short-term and medium-term money, government securities segments, equity and currency markets. Specifically, we study the effects of the COVID-19 pandemic, the Eurozone Sovereign Debt Crisis and the Global Financial Crisis on market returns, volatility and cross-correlations. We employ a (a) vector autoregressive model to analyse the effects of those shocks on returns and (b) multivariate ADCC-GARCH specification to examine the impact on conditional volatility and dynamic conditional correlation in the markets. We find significant effect of the Global Financial Crisis and the pandemic on the dynamics of the …
India And The Rest Of The World: Analyses Of International Monetary Policy Spillovers, Afees A. Salisu
India And The Rest Of The World: Analyses Of International Monetary Policy Spillovers, Afees A. Salisu
Bulletin of Monetary Economics and Banking
The US is India's largest trading partner, followed by the European Union. Our study, using the GVAR model, shows that a US monetary policy (MP) shock results in a depreciation of the Indian currency vis-a-vis the dollar. This is due to Indian investors preferring to invest in the US, which provides higher returns during a US MP shock. The Eurozone MP shock does not have a significant impact due to the increasing dollarization of the Indian economy. However, the US MP shock propagation diminishes when there is economic policy uncertainty. Our findings have implications for monetary policy conduct in India.
The Relationship Between Monetary Policy And The Stock Market Cycle: An Empirical Study In Vietnam, Nhung Thuy Tran
The Relationship Between Monetary Policy And The Stock Market Cycle: An Empirical Study In Vietnam, Nhung Thuy Tran
The Indonesian Capital Market Review
The study examines the relationship between monetary policy and the stock market cycle in Vietnam. Using data from 2007 to 2022 and employing a VAR model, we estimate the impact of monetary policy factors on stock market cycle variables. The findings confirm a two-way causal relationship between monetary policy and the stock market cycle. However, the influence of cyclical fluctuations on the monetary policy transmission mechanism is weak, exhibits a lag, and predominantly occurs in the medium and long term. These results indicate that Vietnam's monetary policy requires time to absorb financial shocks and adjust to economic conditions. The study …
Bubbly Booms And Welfare, Feng Dong, Yang Jiao, Haoning Sun
Bubbly Booms And Welfare, Feng Dong, Yang Jiao, Haoning Sun
Research Collection School Of Economics
We show the competing effects of a housing bubble on the real economy by developing a multi-sector dynamic model with housing production. On the one hand, firms can sell or collateralize their housing, so a housing bubble helps firms obtain credit to finance their investment and expand production. On the other hand, a boom in the housing sector crowds out labor in the non-housing sector. We show that housing booms can reduce social welfare both in the steady state and in the transitional dynamics only when the production externalities in the non-housing sector are sufficiently large. We quantitatively evaluate our …
Hiv Estimation Using Population-Based Surveys With Non-Response: A Partial Identification Approach, Oyelola A. Adegboye, Tomoki Fujii, Denis H. Y. Leung, Siyu Li
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 …
Essays On Estimating Firm-Level Production Function With Spatial Dependence, Bo Lin Ng
Essays On Estimating Firm-Level Production Function With Spatial Dependence, Bo Lin Ng
Dissertations and Theses Collection (Open Access)
This dissertation consists of two chapters on the estimation of firm-level production functions when spatial effects are present. In joint work with Pao-Li Chang, chapter 1 focuses on the impacts of global value chains (GVC) on the firm-level outcomes of Singapore. First, we quantify Singapore’s participation in global value chains (GVC) using the export decomposition framework of Borin and Mancini (2019), before using these indicators to analyse how GVC participation affects sectoral-level valueadded and employment. We find that gross exports and foreign final demand have become more important for Singapore’s value-added, largely driven by the Services sectors. We then use …
Reading The Candlesticks: An Ok Estimator For Volatility, Jia Li, Dishen Wang, Qiushi Zhang
Reading The Candlesticks: An Ok Estimator For Volatility, Jia Li, Dishen Wang, Qiushi Zhang
Research Collection School Of Economics
We propose an Optimal candlesticK (OK) estimator for the spot volatility using high-frequency candlestick observations. Under a standard infill asymptotic setting, we show that the OK estimator is asymptotically unbiased and has minimal asymptotic variance within a class of linear estimators. Its estimation error can be coupled by a Brownian functional, which permits valid inference. Our theoretical and numerical results suggest that the proposed candlestick-based estimator is much more accurate than the conventional spot volatility estimator based on high-frequency returns. An empirical illustration documents the intraday volatility dynamics of various assets during the Fed chairman's recent congressional testimony.
Who Helps Tsimane Children And Adults?, Eric Schniter, Daniel K. Cummings, Paul L. Hooper, Jonathan Stieglitz, Benjamin C. Trumble, Hillard S. Kaplan, Michael D. Gurven
Who Helps Tsimane Children And Adults?, Eric Schniter, Daniel K. Cummings, Paul L. Hooper, Jonathan Stieglitz, Benjamin C. Trumble, Hillard S. Kaplan, Michael D. Gurven
ESI Working Papers
We examine various forms of helping behavior among Tsimane Amerindians of Bolivia, focusing on the provision of shelter, childcare, food, sickcare, cultural influence, and traditional story knowledge. Kin selection theory traditionally explains nepotistic nurturing of youth by closely related kin. However, less attention has been given to understanding the help provided by individuals without close genetic relatedness. To explain who provides various forms of help, we evaluate support for several predictions derived from kin selection theory. Our results show that helpers who are most often closely related and from an older generation tend to provide more costly forms of help …
Refugees Insertion And Labor Market Outcomes And: An Analysis Of The Egyptian Context, Salma Ebrahim
Refugees Insertion And Labor Market Outcomes And: An Analysis Of The Egyptian Context, Salma Ebrahim
Theses and Dissertations
This thesis examines the association between the inflow of refugees to Egypt and labor market outcomes during the period 2012-2018, using data from the Egyptian Labor Market Panel Survey (ELMPS). By applying Difference-in Differences and Probit models, the study compares labor market outcomes between Greater Cairo, characterized by high refugee inflow, and the Suez Canal region, which has a very low inflow. The labor force outcomes analyzed wages, formality and labor force participation. The results indicate that the refugee influx is associated with a decline in wages for both formal and informal workers in the treatment group compared to the …