Review of: "Electric Vehicle Fleet Penetration and Air Pollution Mortality in Europe"

Adebanji, Atinuke · 2026 · Crossref

DOI: 10.32388/cg1e7s

archive: archived pipeline: cataloged verified

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Summary

This document is a peer review report authored by Atinuke Adebanji from Purdue University, evaluating a manuscript titled "Electric Vehicle Fleet Penetration and Air Pollution Mortality in Europe." The reviewer assesses the study as relevant and timely but concludes that it requires major revisions before publication. The primary critique centers on the manuscript’s failure to substantiate causal claims regarding the impact of electric vehicles (EVs) on air quality and mortality, given that the study design is purely correlational. The reviewer identifies significant methodological and structural deficiencies across the manuscript. In the title and abstract, the reviewer argues that the current title misleadingly implies causation and suggests a revision to reflect a cross-sectional analysis. The abstract is criticized for omitting essential details such as the statistical model, covariates, and data sources, and for including policy prescriptions that belong in the conclusion. The introduction is deemed insufficient for establishing the research gap, with a recommendation to incorporate at least three recent related studies. Regarding data sources, the reviewer demands the introduction of a conceptual framework or Directed Acyclic Graph (DAG) and a detailed justification for how missing data was handled, specifically regarding imputation methods. In the results section, the reviewer notes that findings are purely descriptive and lack statistical rigor. Specific criticisms include the failure to address clustering shown in Figure 2, the absence of statistical summaries by country, and the lack of error bars in Figure 1 to quantify uncertainty. The reviewer questions how confounders were controlled and requests the inclusion of regression equations, model diagnostics, and bootstrap confidence intervals. Furthermore, the analysis is criticized for not accounting for potential lag effects or including proxy variables such as country GDP, quality of governance, urbanization levels, healthcare quality, and energy mix. The reviewer also suggests considering nonlinear models to better capture the relationship between EV penetration and mortality. The discussion and conclusion sections are also flagged for improvement. The reviewer advises providing appropriate references for all claims and synthesizing cited literature to situate the study within the broader context. A key emphasis is placed on acknowledging the limitation of ecological inference, specifically the ecological fallacy, and clarifying that the study demonstrates association rather than causation. Finally, the reviewer requests clarification on the role of AI in the study for reproducibility purposes. Overall, the review highlights that while the topic is significant, the current manuscript lacks the statistical depth, methodological transparency, and cautious interpretation required for valid scientific inference.

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Summary generated by qwen3.6-27b-prismaquant on 2026-06-26; verification: verified.

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