臺北醫學大學 骨關節炎文獻索引研究 A Bibliometric Mapping of Osteoarthritis Research 陳榮邦1,2, 何玉山3 Wing P. Chan 1,2, Yuh-Shan Ho 3 1Department of Radiology, Taipei Medical University–Municipal Wan Fang Hospital; 2Department of Radiology, School of Medicine, Taipei Medical University; 3Institute of Public Health, Taipei Medical University Introduction The 2004 edition of the Journal Citation Reports (JCR), published by the Institute for Scientific Information (ISI), lists 5968 journals in the Science Citation Index (SCI). Documents used in this study were based on the database of the SCI subscribed from the ISI Web of Science, Philadelphia, PA, USA. “Osteoarthritis” was used as keywords to search titles, abstracts, or keywords. Articles, corrections, addition corrections, editorial materials, letters, meeting abstracts, news items, notes, reprints, and reviews were obtained from the results of the search for document types. Articles would have further analysis in this study. Articles originating from England, Scotland, Northern Ireland, and Wales were grouped under the UK heading. The impact factor (IF) of a journal was determined for each document as reported in the JCR 2004. Collaboration type was determined by the address of each author, where ‘single country’ was assigned if researcher’s addresses are from the same country. ‘International collaboration’ was assigned if the paper was cosigned by researcher’s addresses from more than 1 country. Purpose Bibliometrics is a type of research method used in library and information sciences. The aim of this study was to understand the distribution and frequency of osteoarthritis research by using bibliometric mapping method. Methods Database was conducted from SCI between 1991 and 2004. Results During the period 1991 and 2004, there was more than a 4-fold increase in both the annual number of articles published and the number of pages devoted to osteoarthritis research. The difference of the cumulative trend was significant between the two periods from 1991 to 1996 and 1996 to 2004. The exponential relation indicates that the yearly articles sustain constantly growth rate on publications after 1996. A total of 10284 articles were published in 1103 journals including specialty journals, but also journals of other disciplines. The most frequently published journals for osteoarthritis research were The Journal of Rheumatology (757, 7.4%), followed by the Osteoarthritis and Cartilage (678, 6.6%), and Arthritis and Rheumatism (578, 5.6%). Sixty-nine percent of articles were published in journals with an IF of lower than 3. In 1996, there were 72 articles with radiographic assessment of osteoarthritic knee, 15 articles were CT methods, 53 were MRI and 56 were arthroscopy. In 2004, there were 307 articles in radiographs, 72 in CT, 316 in MRI and 247 in arthroscopy. Figure 1. Cumulative number of publications by year Figure 2. World osteoarthritis research development from 1991 to 2004 Figure 3. Comparison of various imaging modalities in publication between 1991 and 2004 Conclusion We concluded that osteoarthritic knee research on MRI has been exceeding arthroscopy and X-rays, and much beyond CT scan, and we encourage more research publications on imaging journals.