PubMed和CNKI收录炎症性肠病文献计量学分析

目的分析PubMed和CNKI炎症性肠病(IBD)文献增长规律及影响其发展的主要因素。方法用IBD及其下位词溃疡性结肠炎(UC)和克罗恩病(CD)分别逐年检索1945～2010年PubMed中收录的文献量和1978～2010年CNKI中收录的文献量,之后分别对PubMed和CNKI中收录的文献进行线性回归分析,同时分析国内外相关期刊刊载IBD的论文。结果国内外IBD、UC和CD逐年累积文献量呈上升趋势,IBD、UC和CD散点图均呈指数增长趋势(Y=aeX),前期增长速度较为缓慢,近年来增长速度逐步加快。国外63 824篇IBD文献中,英文49 284篇,为80.54%(49 284/61 195)。国内相关文献15 780篇,其中IBD文献主要刊载于核心期刊6334篇,达40.14%。结论国内外IBD研究的文献量均呈上升趋势,表明IBD的研究仍是一个热点。影响国外IBD文献增长的主要因素是学科自身固有的规律,影响国内文献增长的主要因素是学科所处的环境条件。

Metrological Analysis on Inflammatory Bowel Disease from PubMed and CNKI

Objective To analyze domestic and foreign literature growth regularity and main factors that affect future development of inflammatory bowel disease （ IBD ） from PubMed and CNKL Methods It respectively searched the literature quantity year by year in PubMed from 1945 to 2010 and CNKI from 1978 to 2010 by IBD and its hyponym ： ulcerative colitis（UC） and Crohn＇ s disease （CD）. Then it carried out linear regression analysis with the searching results in PubMed and CNKI. Meanwhile, it analyzed IBD papers published in domestic and foreign j0umals. Results The literature accumulation year by year of IBD, UC and CD increased in PubMed and CNKI. The scattered point diagram was in exponential growing trend（ Y = ae^x ） ,which was slower in the early time but rapidly in the last few years. There were 63 824 IBD literatures in abroad, 80.54% （49 284 of 61 195 ） of which were in English version. The literatures in CNKI were 15 780,40.14% （6334 of 15 780）of which were published in core journals. Conclusion The literature accumulation of IBD is increasing in PubMed and CNKI, indicating that IBD still remains a hotspot. The main factor affecting the growth of literature in IBD is discipline inherent regu- larity abroad, but discipline environment in China.