The Evolution of Academic Performance in Nine Subspecialties of Internal Medicine: An Analysis of Journal Citation Reports from 1998 to 2010

Yan Zhang, Jia Kou, Xue-Guang Zhang, Li Zhang, Shu-Wen Liu, Xue-Ying Cao, Yuan-Da Wang, Ri-Bao Wei, Guang-Yan Cai and Xiang-Mei Chen

PLOS ONE, 2012, vol. 7, issue 10, 1-8

Abstract: Background: Internal medicine includes several subspecialties. This study aimed to describe change trend of impact factors in different subspecialties of internal medicine during the past 12 years, as well as the developmental differences among each subspecialty, and the possible influencing factors behind these changes and differences. Methods: Nine subspecialties of internal medicine were chosen for comparison. All data were collected from the Science Citation Index Expanded and Journal Citation Reports database. Results: (1) Journal numbers in nine subspecialties increased significantly from 1998 to 2010, with an average increment of 80.23%, in which cardiac and cardiovascular system diseases increased 131.2% rank the first; hematology increased 45% rank the least. (2) Impact Factor in subspecialties of infectious disease, cardiac and cardiovascular system diseases, gastroenterology and hepatology, hematology, endocrinology and metabolism increased significantly (p 6), hematology had the maximum proportion of 10%, nephrology and respiratory system disease had the minimum of 4%. Among the journal with low impact factor (IF

Date: 2012
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0048290

DOI: 10.1371/journal.pone.0048290

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