Instrumental Variable Regression Research Articles

FEMALE IN MANAGER-OWNER TEAMS: DRIVERS OF INNOVATION AND FIRM PERFORMANCE IN MENA MARKETS

This study examines the relationship between women in pivotal organisational roles, innovation, and firm performance in the MENA region. It employs data from the World Bank Enterprise Survey (WBES) across six MENA countries to explore how female leadership, combined with managerial experience (ME), impacts innovation and firm performance. We employ the two-stage least square instrumental variable (2SLS-IV) regression method, which addresses potential biases caused by endogeneity and allows us to discern genuine causal relationships better. Our results indicate a positive influence of female leadership on innovation, although this effect diminishes with more excellent ME. Innovation remains a critical factor for firm performance in the MENA region. This research illuminates the multifaceted role of women in organisational leadership, underscoring their impact on innovation and firm performance, with implications for policymakers and business leaders globally.

#2628 A haemodialysis patient-centred model of care with a multidisciplinary programme: what is its clinical and health efficiency impact?

Abstract Background and Aims Chronic kidney disease (CKD) constitutes a public health concern due to its notable morbidity & mortality and associated costs. The Patient Care Coordination program (PCC) provides comprehensive and personalized care to haemodialysis (HD) patients. This study evaluated the cost-effectiveness of PCC compared to standard of care (SoC). Method The study included patients in 9 HD clinics (5 PCC, 4 SoC) in Catalonia, Spain, in 2020-2021. A comparative effectiveness evaluation was conducted to compare change in Individual Patient Performance Score (IPPS, score 0-100, evaluates parameters such as vascular access, adequacy of HD, anaemia, mineral bone disease, arterial hypertension, nutrition/hydration status) and number of hospitalisations of PCC patients vs SoC during the first year in the program. Instrumental variables (IV) regression analysis was performed to address potential confounding; number of interactions with program specialists was a valid IV to estimate degree of PCC use. An incremental cost-effectiveness analysis (iCEA) through microsimulation was performed using the effectiveness data from the previous step, population data from the renal patient registry of Catalonia, and the cost of hospitalisations obtained from the Public Health System. Results 127 patients in PCC and 363 patients in SoC were included. The degree of PCC use had a positive impact on IPPS variation during the first year of the program (p = 0.012). In the iCEA the PCC program resulted in a mean gain of 3.4 additional IPPS points, a reduction of 0.2 hospitalisations per patient, and reduced mean costs of €1,265 per patient in the first year compared to SoC, resulting to be a dominant alternative (Fig. 1). Conclusion The holistic and interdisciplinary approach to the patient has further highlighted the relevance of programme use and not only belonging to the programme in achieving clinical goals. The PCC program represents thus a dominant alternative, with greater effectiveness and total cost savings that could sum up to €5.5 million per year in the region due to reduced hospitalizations. This approach may be an alternative to address the challenges of CKD and optimise the allocation of healthcare resources.

The Impact of Climate Change Transition Innovations on the Default Risk

In the context of climate change mitigation and adaptation, climate risks stemming from climate transition innovations have garnered significant attention due to concerns about the inadequate climate finance. To shed light on the climate transition risk posed by innovations, this study constructed low-carbon innovation indicators of listed firms in China spanning 2015 to 2021. This study investigated the impact of climate transition innovations on the default risk, considering the mediation effect of investor attention, total factor productivity, and technology spillovers. The findings suggest that low-carbon innovations can mitigate the default risk of listed firms, as evidenced by three low-carbon innovation indicators. Additionally, the research reveals that the climate innovation effect on default risks was moderated when considering climate policy through heterogenous analysis. Furthermore, instrumental variable regressions using the time costs of innovation support the findings. Lastly, default risk was mitigated through lower levels of investor attention, greater total factor productivity, and technology spillovers.

Effect of the contextual (community) level social trust on women’s empowerment: an instrumental variable analysis of 26 nations

The purpose of this paper is to examine the effect of contextual (community) level social trust on women’s empowerment. The specific knowledge gap explored in this study is that the previous studies theorized that community trust has a positive impact on women’s empowerment. Thus, an increase in trust in the community will empower women. However, such an assumption has been never empirically tested and confirmed. Against this backdrop, the present paper develops a theoretical argument on why the increase in community trust should lead to a higher level of women empowerment. Then, a cross-country survey was used as a data source to test the effect of community trust on women’s empowerment. A traditional single-stage OLS and instrumental variable regressions are estimated to test the effect of community trust on women’s empowerment and quantify the magnitude of such impact. The key finding of this paper is that community trust indeed significantly strengthens the empowerment of women by increasing women’s ownership of assets and improving the decision-making authority of women in the family. Importantly, our findings are robust for the separate rural and urban samples, as well as the samples of younger and older women. Equally, our findings are robust for an alternative set of instruments. The main implication of these findings is that policymakers, social administrators, and government authorities who are working on promoting gender equality should give priority to promoting community-based interventions that nurture and maintain women’s trust.

From black to green: Quantifying the impact of economic growth, resource management, and green technologies on CO2 emissions

In an exploration of environmental concerns, this groundbreaking research delves into the relationship between GDP per capita, coal rents, forest rents, mineral rents, oil rents, natural gas rents, fossil fuels, renewables, environmental tax and environment-related technologies on CO2 emissions in 30 highly emitting countries from 1995 to 2021 using instrumental-variables regression Two-Stage least squares (IV-2SLS) regression and two-step system generalized method of moments (GMM) estimates. Our results indicate a significant positive relationship between economic growth and CO2 emissions across all quantiles, showcasing an EKC with diminishing marginal effects. Coal rents exhibit a statistically significant negative relationship with emissions, particularly in higher quantiles, and mineral rents show a negative association with CO2 emissions in lower and middle quantiles, reinforcing the idea of resource management in emissions reduction. Fossil fuels exert a considerable adverse impact on emissions, with a rising effect in progressive quantiles. Conversely, renewable energy significantly curtails CO2 emissions, with higher impacts in lower quantiles. Environmental tax also mitigates CO2 emissions. Environment-related technologies play a pivotal role in emission reduction, particularly in lower and middle quantiles, emphasizing the need for innovative solutions. These findings provide valuable insights for policymakers, highlighting the importance of tailoring interventions to different emission levels and leveraging diverse strategies for sustainable development.

Economic effects of a controlled mangrove-to-pond coverage ratio policy on mangrove conservation and shrimp farming: A case study in vietnam using instrumental regression analysis

The mangrove-shrimp farming model in Vietnam's Mekong Delta region was devised to foster mangrove conservation while supporting the livelihoods of small-scale shrimp farmers by allocating them land for both mangrove protection and shrimp farming. However, this model faces challenges as farmers often clear mangrove areas to expand shrimp ponds, seeking greater profits. Based on data collected from structured interviews with shrimp farming households, an Instrumental Variable (IV) regression method is used in this study to examine the economic viability of mangrove-shrimp farming in the Tam Giang Protection Forest of Ca Mau province and predict the impacts of recommended fixed mangrove-to-pond coverage ratios (MPR) on shrimp yield and household income in two different scenarios. Findings reveal that almost half of the surveyed farmers do not meet the recommended MPR, prioritizing pond expansion over mangrove protection, suggesting prevalent noncompliance and ineffective regulatory enforcement. Additionally, the research highlighted the critical role of mangrove-shrimp farming in the livelihoods of these communities, with findings indicating that even minimal increases in pond area can enhance productivity. Conversely, stricter pond coverage regulations could potentially worsen the economic situation for numerous households.

Impact of Globalization on Women Empowerment in the Presence of Corruption

Positive spillover effect of globalization ascends women empowerment but under corruption benefits of global integration on women empowerment become vulnerable. Results attain through instrumental variable regression analysis reveal that under the presence of corruption benefits of globalization on women empowerment are significantly reduce by 18 percent. This outcome sorts corruption as main hindrance element in trickle-down the fruitful advantages of globalization on women’s betterment. More corrupt the country, less benefits of globalization will be translated to women, and less will be the women empowerment in the country, this fact implies relevance for the policy formalization. Moreover, economic, political and social globalization has positive and significant effect on women empowerment.

Does reversal of the educational gender gap affect Men's happiness: Evidence from China

AbstractIn the context of the reversal of the educational gender gap, this article employs a nationally representative survey to examine the relationship between a wife's educational advantages (i.e., wife attains more education than her husband) and her husband's happiness. By controlling for individual, family, and community factors, we demonstrate that a husband's happiness is positively associated with his wife's educational advantages. Instrumental variable regressions and series of robustness checks corroborate the conclusion. However, certain heterogeneities are observed, with a particularly notable positive association among men with higher education levels, younger age, and those residing in the eastern region, likely influenced by their egalitarian gender ideologies. The study suggests that men are increasingly accepting of marriages in which the wife is more educated than her husband.

Testing the permanent income hypothesis using the Spanish Christmas Lottery

Purpose This study aims to investigate the impact of local windfall gains from the Spanish Christmas lottery on household consumption behavior. Design/methodology/approach The study applies differences-in-differences to assess permanent income hypothesis (PIH) validity, examining pre- and postlottery consumption effects. Additionally, it also uses an instrumental variable regression, using the lottery shock as an instrument for total expenditures, to estimate the Engel curves. Findings The paper finds a PIH violation; households in winning region notably increase consumption on durable and nondurable goods compared to nonwinning ones. Moreover, durable goods consumption is responsive to lottery winnings, while nondurable goods consumption are unit-elastic to expenditure shocks. Originality/value To the best of the author’s knowledge, this is the first paper analyzing the effects of winning regions of the Spanish Christmas lottery in all types of consumption goods, testing its consequences in the PIH and estimating its effects in the Engel curves.

Policy support strategies for organic farming extensification in Nigeria

To achieve a more sustainable agricultural production system, the focus should extend beyond solely promoting the adoption of organic farming to include an emphasis on extensification. A synergistic approach involving Branding/informal certification, price premiums for organic produce, and government subsidies holds the potential to drive higher levels of organic farming extensification among smallholder producers. This study encompassed 415 organic growers engaged in varying degrees of organic farming. These participants were drawn from the Southeast region of Nigeria. Employing a multi-endogenous instrumental variable regression, the research uncovered compelling insights. Notably, it revealed that providing premiums for organic products and utilizing Branding or informal certification significantly supported growers' inclination to expanding the land area under organic agriculture. Conversely, government subsidies exhibited a negative influence on extensification rates. In light of these findings, it becomes imperative to envision a more robust future for organic farming in Nigeria that hinges on strategic investments in formal certifications, thereby facilitating enhanced integration of organic producers into larger domestic and global markets.

A Gendered Analysis of the Influence of Remittances and Democracy on Human Capital Accumulation via Educational Achievements

Although development experts acknowledge several development potentials of remittances, a clear understanding of the impacts of remittances and democracy on human capital accumulation regarding gender at the global level is still missing. In this research, we analyse the influences of remittances and democracy on human capital accumulation in terms of educational success, specifically primary, secondary and tertiary education, and average years of schooling with a gender focus at the global level through instrumental variables (IV) regression model. Our model using data from various valid international sources finds that (1) remittances have a significant positive impact on secondary and tertiary education and average years of schooling; (2) these have a higher significant effect on females’ education compared to their male counterparts; and (3) these are more instrumental for education in higher democratic developing countries rather than countries having no- or low-level of democracy. Next to remittances, the results find that (4) democracy has a significant positive influence on primary education and average schooling years; and (5) this is helpful for the educational advancement of both males and females but more effective for women compared to men. Based on our results, we suggest that remittances to developing countries and democratic practices in these countries can support investing and leveraging females’ education, which is a key mechanism for empowering women around the globe.

Trade liberalisation and manufacturing employment in developing countries

The manufacturing sector has played an important role in the structural transformation process in the developing world by providing jobs and income opportunities. Using data from 131 developing countries from 1991 to 2020, we estimate the impact of trade liberalisation on manufacturing employment using panel fixed-effects and instrumental variable regression approaches. We find that trade liberalisation – on average – has harmed manufacturing employment in developing countries. There are considerable differences at the regional level; the impact has been most substantial in sub-Saharan African and Latin American countries. At least in these regions, trade liberalisation has contributed to deindustrialisation. Policies that improve labour productivity in manufacturing will increase the competitiveness of manufacturing firms in these countries in the face of growing trade globalisation.

Comparison of Full-Time Equivalent and Clinic Time Labor Input Measures in Productivity Metrics.

A lack of improvement in productivity in recent years may be the result of suboptimal measurement of productivity. Hospitals and clinics benefit from external benchmarks that allow assessment of clinical productivity. Work relative value units have long served as a common currency for this purpose. Productivity is determined by comparing work relative value units to full-time equivalents (FTEs), but FTEs do not have a universal or standardized definition, which could cause problems. We propose a new clinical labor input measure-"clinic time"-as a substitute for using the reported measure of FTEs. In this observational validation study, we used data from a cluster randomized trial to compare FTE with clinic time. We compared these two productivity measures graphically. For validation, we estimated two separate ordinary least squares (OLS) regression models. To validate and simultaneously adjust for endogeneity, we used instrumental variables (IV) regression with the proportion of days in a pay period that were federal holidays as an instrument. We used productivity data collected between 2018 and 2020 from Veterans Health Administration (VA) cardiology and orthopedics providers as part of a 2-year cluster randomized trial of medical scribes mandated by the VA Maintaining Internal Systems and Strengthening Integrated Outside Networks (MISSION) Act of 2018. Our cohort included 654 unique providers. For both productivity variables, the values for patients per clinic day were consistently higher than those for patients per day per FTE. To validate these measures, we estimated separate OLS and IV regression models, predicting wait times from the two productivity measures. The slopes from the two productivity measures were positive and small in magnitude with OLS, but negative and large in magnitude with IV regression. The magnitude of the slope for patients per clinic day was much larger than the slope for patients per day per FTE. Current metrics that rely on FTE data may suffer from self-report bias and low reporting frequency. Using clinic time as an alternative is an effective way to mitigate these biases. Measuring productivity accurately is essential because provider productivity plays an important role in facilitating clinic operations outcomes. Most importantly, tracking a more valid productivity metric is a concrete, cost-effective management tactic to improve the provision of care in the long term.

Board skill diversity and corporate environmental responsibility: the moderating effects of formal and informal pressures

Purpose This study aims to investigate the impact of board skill diversity (BSD) on corporate environmental responsibility (CER). In addition, this study explores the moderating effects of formal regulatory pressure and informal media pressure. Design/methodology/approach This study uses Chinese high polluting companies as the sample and uses regression analysis. Robustness checks, including instrumental variable regression, Heckman two-stage model and propensity score matching method, are performed to test the robustness of the results. Findings The findings suggest that BSD significantly improves CER performance. Both formal regulatory pressure and informal media pressure strengthen the positive impact of BSD on CER. Further channel analyses reveal that BSD improves CER performance by promoting corporate proenvironmental behaviors rather than by restricting environmental violations; skill diversity of executive directors has a more significant effect on CER than that of independent directors. Finally, the moderating effect of regulatory pressure is only significant after the implementation of the Environmental Protection Law, and the moderating effect of media pressure mainly concentrates on negative media coverage. Practical implications The involvement of directors with more diverse skills is essential to improve corporate proenvironmental behaviors. Companies should select qualified directors with different skills to further improve their performance on environmental protection and sustainable development. Social implications Regulators and standard-setters should develop efficient guidelines on corporate board governance to enhance the positive role of companies in environmental and sustainable development. Originality/value This study broadens the research on the determinants of CER by examining the influence of BSD on CER and the moderating roles of various stakeholder pressures, thereby providing a deeper understanding of corporate environmental performance and sustainable development.

Impact of homework time on adolescent mental health: Evidence from China

Fierce competition in China's basic education system results in students spending too much time on homework. However, few studies have explored the mental health effects of homework time. Using data from the China Education Panel Survey (CEPS), this paper empirically examines the impact of homework time on adolescent mental health through the fixed-effects model and instrumental variables regression. Additionally, this study explores the moderating effects of teacher support and parent involvement. The results indicate that homework time has a negative effect on adolescent mental health, but only when the amount of time spent on homework exceeds about 1 hour and 15 minutes. Overall, there is a non-linear relationship between homework time and adolescent mental health. Teacher support, particularly emotional support, can mitigate the adverse mental health effects of excessive homework time, whereas parental involvement does not show the same positive effect. The analysis of heterogeneity reveals that adolescents from rural schools or medium family economic backgrounds experience a more pronounced negative impact from excessive homework time compared to those from urban schools, poorer or richer family backgrounds. Furthermore, students with outstanding academic performance are affected more significantly than their peers with poor academic performance. The empirical results echo the targets of the Chinese "double reduction policy" which requires strict control of homework time. Education policymakers should reasonably regulate homework time and systematically explore education concepts and teaching methods that are compatible with the reduction of homework time.

Interplay of Status Perception, Visible Inequality, Conspicuous Consumption, and Food Expenditure: Evidence from Consumer Pyramid Household Survey of Indian Households*

This study delves into the intricate interplay between visible inequality, conspicuous consumption, and food consumption in Indian households. Leveraging data from the Consumer Pyramids Household Survey (CPHS) provides significant insights. Through empirical analyses, including panel data analysis and instrumental variable panel data analysis, this study supports the hypothesis that there exists a relationship between visible inequality and conspicuous consumption among Indian households. The positive coefficients linked to conspicuous consumption variability reinforce established theories concerning the impact of status perception on spending behaviour. This study reveals a noteworthy adverse effect of visible inequality on essential expenditures, particularly food consumption, highlighting the delicate balancing act that households navigate between status‐driven spending and meeting fundamental needs. By employing instrumental variable regression models to address endogeneity concerns, this study robustly confirms the relationship between visible inequality and conspicuous consumption. This study emphasises the nuanced relationship between status‐oriented spending, visible inequality, and essential expenses in Indian households.

Mortgage Borrowing and Chronic Disease Outcomes in Older Age: Evidence from Biomarker Data in the Health and Retirement Study.

The medical diagnosis of a disease is common in older age and can carry significant financial costs. For many older adults, equity in a home is their primary component of wealth; however, housing wealth is illiquid. We analyze the relationship between the liquidation of housing wealth through mortgage borrowing on older homeowners' ability to successfully control a disease. We use data on homeowners age 65 and older from the 1998-2016 waves of the Health and Retirement Study (N=3,457). We use biomarkers and physical health indicators to measure disease control following a medical diagnosis of diabetes, heart condition, high blood pressure, lung disease, or cancer. Random effects linear probability and instrumental variable regressions estimate the associations of housing wealth, new mortgage borrowing, and disease control. Descriptively, 28% of older homeowners who borrow against home equity are not controlled on their disease, compared to 33% of non-borrowers. Panel data instrumental variable regressions show that each $10,000 borrowed from home equity after diagnosis is associated with a 17 percentage-point reduction in the probability of the disease not being controlled. Many older adults are not able or willing to liquidate housing wealth, and the ability to borrow also depends on changes in home values. Thus, housing wealth is not a uniform social determinant of health but is shaped by older adults' participation in financial markets.

Intelligentization helps the green and energy-saving transformation of power industry-evidence from substation engineering in China

The coordinated development of intelligence and greening is an intrinsic demand for high-quality economic and social development. Intelligentization and greening are the leading directions of sustainable development of the power industry. This paper directs of sustainable development of the power industry. This paper empirically analyzes the effect and mechanism of intelligence on the green environmental friendliness of electric power substations by using a panel fixed-effects model and instrumental variable regression, using substation engineering data from China southern power grid during 2013–2022. It is found that the level of intelligence significantly promotes the green performance of substation projects, and this conclusion still holds after a series of robustness tests. Intelligence can reduce material waste and pollutant emissions by improving the engineering environmental monitoring capability and the refinement of engineering resource control, thus improving the environmental friendliness of the project. The research in this paper helps to promote the integrated development of intelligent and green power engineering, to better achieve economic and green goals.

The effect of renewable energy aid and governance quality on environmental tax effort in Sub-Saharan Africa

The literature on foreign aid and tax efforts largely overlooks the specific role of environmental aid and taxation. To fill this gap, we examine the effects of renewable energy development assistance (EDA) and governance quality on climate change tax effort, air pollution tax effort, and aggregate environmental tax effort in Sub-Saharan Africa (SSA). Utilizing panel data from 15 SSA countries over 20 years (2000–2019), the sample is divided into two groups based on income levels: seven low-income countries (LIC) and eight middle-income countries (MIC). The instrumental variable generalized method of moments (IV-GMM) regression technique is employed to estimate the parameters of the baseline model specifications. The study also uses the Smoothed Instrumental Variable Quantile Regression (SIVQR) technique to test the robustness of the baseline model. Among middle-income SSA countries, the findings suggest that renewable energy aid inflows reduce climate change tax efforts but increase air pollution and aggregate environmental tax efforts. However, among low-income SSA countries, renewable energy aid negatively impacts all three categories of environmental tax efforts. Governance quality tends to enhance all three categories of environmental tax effort in both low-income and middle-income SSA countries. The implications of these results are discussed.

Does Cultural Embeddedness on Cigarette Packages Mitigate Environmental Information Credibility? Evidence from China

ABSTRACT Drawing on the behavioral consistency theory, we examine whether cultural embeddedness on cigarette packages as a sinful behavior window dressing affects environmental information credibility, and further investigate the moderating role of high-quality external audit (Big4 auditors). Using hand-collected data from China, our findings reveal that cultural embeddedness on cigarette packages at the province level is significantly negatively associated with corporate environmental information credibility, suggesting that cultural embeddedness on cigarette packages shapes unethical social atmosphere around firms, triggers managers to cover up environmental misconducts, and eventually mitigates environmental information credibility. Moreover, Big4 auditors weaken the negative relation between cultural embeddedness on cigarette packages and environmental information credibility. Above findings are robust to a variety of sensitivity tests using alternative proxies for cultural embeddedness on cigarette packages and environmental information credibility, and further our conclusions are still valid after using the propensity score matching method, two-stage instrumental variable OLS-TOBIT regression procedures, and Heckman two-stage regression approach to address the endogeneity issues. Furthermore, cultural embeddedness on cigarette packages significantly positively induces greenwashing. Lastly, our main findings are more pronounced for firms without pollution control departments, with lower investment in environmental technologies, with less media coverage and in provinces with lower legal enforcement.