Okamoto Shigeru, Rahman Mahbubur, Fukui Tsuguya
Department of General Medicine and Clinical Epidemiology, Kyoto University Graduate School of Medicine, Kyoto, Japan.
Pediatr Int. 2004 Feb;46(1):1-4. doi: 10.1111/j.1328-0867.2004.01836.x.
To determine Japan's contribution to research in clinical pediatrics over the last decade.
Articles published in highly reputable pediatrics journals from 1991-2000 were accessed through the MEDLINE database. The number of articles which had an affiliation with a Japanese institution were counted for each of the journals and also summed in total. Proportions of randomized controlled trials (RCTs) and case-control/cohort studies among the articles from Japan were also generated and compared with the average for the entirety. In addition, shares of the top-ranking countries were presented along with their trend over time.
In total, 20 189 articles were published in the selected seven pediatric journals from 1991-2000. Japan contributed 3.0% of these articles and this contribution was ranked 7th in the world. A negative trend was noticed in Japan's contribution over time but it was not statistically significant (z = -0.40, P = 0.16). RCTs accounted for 7.3% of the total articles, but only 0.34% of those from Japan.
Japan's share of articles in pediatrics research was smaller than that in basic science and some of the other clinical fields. The number of articles from Japan providing a high level of evidence was meager in this field.
确定日本在过去十年临床儿科学研究中的贡献。
通过MEDLINE数据库获取1991年至2000年发表在声誉较高的儿科学期刊上的文章。统计每本期刊中与日本机构有关联的文章数量，并计算总数。还计算了来自日本的文章中随机对照试验（RCT）和病例对照/队列研究的比例，并与整体平均水平进行比较。此外，列出了排名靠前国家的份额及其随时间的趋势。
1991年至2000年期间，选定的七本儿科学期刊共发表了20189篇文章。日本的文章贡献占比为3.0%，在世界排名第七。随着时间推移，日本的贡献呈下降趋势，但无统计学意义（z = -0.40，P = 0.16）。RCT占文章总数的7.3%，但来自日本的文章中RCT仅占0.34%。
日本在儿科学研究中的文章占比低于基础科学和其他一些临床领域。该领域来自日本的提供高水平证据的文章数量较少。
