Abstract
Background Studies on myocardial infarction (MI) based on large medical databases have become popular in recent years. The influence of the National Inpatient Sample (NIS), the largest collection of administrative healthcare data across the United States, on the field of MI has not been well investigated. This study aimed to quantify the contribution of NIS to MI research using bibliometric methods. Methods We searched the Web of Science Core Collection database to identify publications on MI using NIS from 2000 to 2022. Bibliometric indicators, such as the number of publications, citations, and Hirsch index (H-index), were summarized by years, authors, organizations, and journals. VOSviewer and CiteSpace software were used to analyze the keywords and trends of the hot spots. Results A total of 342 articles on MI based on NIS were included. A significant growth in outputs related to MI using the NIS from 2000 to 2020 was observed. The publications were mainly from the United States. The Mayo Clinic was the most prolific institution and had the most citations and the highest H-index. The American Journal of Cardiology ranked first among journals with the highest number of publications, citations, and H-index. Mortality and healthcare management are the main focuses of this field. Personalized risks and care are receiving increased attention. Conclusion This study suggests that NIS significantly contributes to high-quality output in MI research. More efforts are needed to improve the impact of knowledge gained from the NIS on MI.
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