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Business, Economics and Management
Econometrics and Statistics

Fabio Anobile

,

Alberto Costantiello

,

Carlo Drago

,

Massimo Arnone

,

Angelo Leogrande

Abstract: This paper examines the connection between Environmental, Social, and Governance (ESG) factors and the risk of geopolitics, as defined by the Geopolitical Risk (GPR) index. The concept of geopolitical risk is conventionally defined as the direct result of political incidents, war, and international tensions. The current study argues that the concept should be understood in a more structural and sustainable manner, relating to the underlying forces driving geopolitical risk. The main research question is whether and how the three pillars of the ESG factors contribute to the explanation and understanding of cross-country and over-time variations in geopolitical risk. In an effort to avoid the information losses associated with the aggregate nature of the ESG index, the three factors are considered separately and the three pillars are analyzed individually. The empirical context is a balanced cross-country panel data set including 42 countries over the 2000-2023 time period. The data for the three factors is obtained from the World Bank dataset in an effort to standardize and compare the data in a cross-country and cross-time manner. The GPR index is used to measure the level of geopolitical risk and is defined by Dario Caldara and Matteo Iacoviello. The GPR index captures the level of geopolitical tensions based on the analysis of media signals. The combination of the three sources allows for the direct connection and correlation between the three factors and the internationally recognized GPR index. The paper uses an integrated methodological approach that combines the results from three different approaches. The first method uses panel data analysis in an effort to identify the average marginal effects while controlling for unobserved heterogeneity. The second method uses the technique of clustering in an effort to identify structural patterns and divide the countries into groups based on their unique characteristics and risk profiles. The third method uses machine learning regressions and nonparametric analysis in an effort to capture the complex relationships and interactions in the data. The three-step method is used for each pillar in an effort to ensure consistency and comparability. The results suggest that the three factors contribute to the GPR index in a unique manner. The environment and energy structure contribute to the GPR index as a risk multiplier, the social factor is related to the exposure to instability, and the governance factor is a central stabilizing factor. The paper makes a unique contribution to the literature by defining the concept of the three factors and their relationship to the GPR index in a unique and sustainable manner.

Article
Business, Economics and Management
Econometrics and Statistics

Kola Adegoke

,

Olajide Alfred Durojaye

,

Abimbola Adegoke

,

Deborah Dawodu

,

Adeyinka Adegoke

,

Anuoluwapo Deborah Bayowa

,

Eunice Bisola Akano

Abstract: Background: U.S. hospitals have increasingly affiliated with multi-hospital chains, raising questions about whether consolidation yields operational efficiencies or primarily reflects integration costs and market power. Evidence on the dynamic financial response to chain entry—especially in recent years—remains limited.Objective: To estimate dynamic association in hospital financial margins around sustained chain joining using a staggered-adoption-robust event-study design.Methods: We analyzed a RAND-processed HCRIS hospital panel (2014–2023). Dynamic effects were estimated using the Sun & Abraham interaction-weighted event-study estimator with hospital and year fixed effects and hospital-clustered standard errors. We implemented two baseline rules (“has2014” and “entry”) and examined total, operating, and cash-flow margins. To reduce ratio outliers, margins were cleaned using year-specific denominator screening and hard caps for extreme values (|margin|>500%), then winsorized within year (p1/p99) for main analyses. Depending on outcome and baseline rule, models used approximately 13,000–24,000 hospital-year observations, covering ~2,600–2,900 hospitals and roughly 600 sustained chain joins. Robustness checks included a balanced-panel restriction, a treated-only stacked specification, placebo assignment among never-treated hospitals, and ownership-stratified estimates.Results: Lead coefficients were generally small, but cash-flow margins exhibited a statistically detectable negative lead at t = −4 in both baseline rules (p≈0.03), while other leads were typically indistinguishable from zero. Post-entry effects were modest and imprecise across outcomes. Total margins showed near-zero contemporaneous changes at t=0 and small negative estimates in years 1–3 that attenuated by year 4. Operating and cash-flow margins displayed small post-entry declines around t=2 (≈1 percentage point in magnitude; p≈0.06–0.09). Robustness checks (balanced panel, stacked design, placebo) broadly supported a null or weak-transient pattern. Ownership stratification suggested modest longer-run improvements for nonprofit hospitals in later post years (e.g., t=4: +3.7 percentage points; p=0.045), while for-profit estimates were mixed and imprecise.Conclusions: Over 2014–2023, sustained chain joining was not associated with consistent, sustained improvements in hospital financial margins on average. Observed changes were small, often imprecise, and in some outcomes suggest modest short-run declines consistent with integration costs. Continued monitoring with longer post-entry windows and additional outcomes is warranted.

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