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Japan's contribution to clinical pediatrics research in the last decade
Shigeru Okamoto1, Mahbubur Rahman, Tsuguya Fukui
1Department of General Medicine and Clinical Epidemiology, Kyoto University Graduate School of Medicine, Kyoto, Japan.
Insights
Japan
Area of Science:
- Pediatric Research
- Clinical Pediatrics
- Medical Research Trends
Background:
- Assessing global contributions to medical research is crucial for understanding scientific progress.
- Japan's role in clinical pediatrics research requires detailed examination.
Purpose of the Study:
- To quantify Japan's contribution to clinical pediatrics research from 1991-2000.
- To analyze trends and the quality of evidence in Japanese pediatric research.
Main Methods:
- MEDLINE database search for articles in top pediatrics journals (1991-2000).
- Counted articles with Japanese institutional affiliations.
- Analyzed proportions of randomized controlled trials (RCTs) and compared with global averages.
Main Results:
- Japan contributed 3.0% of articles, ranking 7th globally.
- A non-significant negative trend in Japan's contribution was observed.
- Japanese studies had a very low proportion of RCTs (0.34%) compared to the overall average (7.3%).
Conclusions:
- Japan's output in clinical pediatrics research is lower than in basic sciences.
- The volume of high-evidence studies (RCTs) from Japan in pediatrics is notably limited.
Objective:
To determine Japan's contribution to research in clinical pediatrics over the last decade.
Methods:
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.
Results:
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.
Conclusions:
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.
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