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Background: To analyse the bibliometric results of a study on the research trends in excessive daytime sleepiness (EDS) among older adults to provide clinicians and researchers with a better understanding of the current status and to identify potential new research directions. Methods: We searched the Web of Science Core Collection for articles on immunotherapy for EDS in older adults. We used three software packages (VOSviewer, CiteSpace, and Tableau) to analyze the articles in terms of journals, keywords, citations, co-citations, and research areas and identify research hotspots as well as promising future trends in this field. Results: Our findings showed an annual increase in the number of articles on EDS that were published. Among them, authors from the USA had the highest number of publications globally in this field, while in terms of institutions, the highest number of articles came from Stanford University (n = 26, 2.73%). The articles covered diverse research areas and included clinical neurology, neuroscience, and the respiratory system. As expected, journal-wise, the majority of articles were published in “Sleep” and “Sleep Medicine”. Keywords indicating research areas in recent years were ‘important difference,’ ‘obstructive sleep apnea,’ and ‘shift work.’ These were also reflected in the results of the co-citation analysis. Conclusions: Overall, EDS is an area of increasing interest and offers excellent research opportunities for the future.
Feng et al. (Sun,) studied this question.