The working paper titled “Four Decades of Health Economics through a Bibliometric Lens” by Adam Wagstaff and Anthony J. Culyer (World Bank Policy Research Working Paper No. 5829) presents a systematic and large-scale bibliometric analysis of the health economics field over the period 1969–2010. Drawing on metadata from the EconLit database, augmented with citation data from Google Scholar, the authors map out the disciplinary contours, institutional productivity, topical evolution, and citation-based influence of nearly 33,000 publications categorized under health economics.
The report is structured into five major sections. The introduction contextualizes the historical development of health economics as a scholarly domain and justifies the bibliometric approach. The second section outlines the methodological framework, introducing three citation-based influence indices: the h-index, a quadratic influence function (QIF), and the I₃ index which interpolates between raw publication counts and cumulative citations. The third section describes the data sources, emphasizing the choice of EconLit for its use of JEL classification codes and broad coverage of economics-related outputs. This section also details the process of data cleaning, author disambiguation, and institutional affiliation standardization. In the results section, the authors present quantitative findings on publication growth, authorship trends, institutional and country rankings, topic-wise citation distributions, and journal performance. The conclusion reflects on the field’s maturation, noting both enduring gaps and future directions.
A central contribution of the study lies in Table 1, which presents the 300 most-cited publications in health economics, grouped thematically. Twelve core topics are identified, with the most prominent being “Determinants of health and ill-health” (16% of top-cited papers). Seminal works in this category include Becker et al. (1994) on health behaviors, Dasgupta (1993) on nutrition and poverty, and Deaton (2003) on inequality. These publications explore both macroeconomic and individual-level determinants of health outcomes.
The second most represented category is “Economic evaluation” (11%), including influential articles such as Torrance (1986) on utility measurement techniques, Weinstein (1991) on cost-effectiveness frameworks, and Tengs et al. (2004) on comparative life-saving interventions. The category “Health and its value” contains the most cited publication overall: Acemoglu et al. (2001) on colonial institutions and health, indicating a deep intersection with development economics. Other prominent themes include Public health, Health and the economy, and Medical insurance, the latter featuring foundational articles by Arrow (1963) and Pauly (1968, 1973). Notably, the coverage also extends to more technical areas like Health statistics and econometrics, which includes works that introduced or adapted methodological innovations for health-related data.
Table 3 examines the temporal dynamics of thematic trends by analyzing the 50 most-cited publications from each of the four decades studied. This longitudinal analysis reveals a declining emphasis on traditional topics such as Medical insurance and Supply of health services, both of which were dominant in the 1970s and 1980s. In contrast, more recent decades show a rising prominence of Determinants of health and ill-health and Health statistics and econometrics, reflecting the increasing methodological sophistication and global scope of the field.
The authors interpret these shifts as indicative of a broadening disciplinary agenda. Early interest in institutions, insurance markets, and provider behavior has given way to inquiries into the socioeconomic determinants of health, behavioral economics, and technical advances in econometric modeling. This diversification is further confirmed by a linguistic analysis of keywords and title terms, which shows growing variation and greater attention to issues relevant to low- and middle-income countries.
In sum, Wagstaff and Culyer’s bibliometric analysis charts the intellectual trajectory of health economics over four decades, identifying its foundational texts, evolving research priorities, and changing patterns of influence. The report not only documents the growth and diversification of the field but also offers a replicable methodological framework for future bibliometric inquiries across other applied economics domains.
Reference: Wagstaff, A., & Culyer, A. J. (2011). Four decades of health economics through a bibliometric lens (Policy Research Working Paper No. 5829). The World Bank. https://doi.org/10.1596/1813-9450-5829
