Hansen H B, Brinch K, Henriksen J H
Hvidovre Hospital, klinisk fysiologisk/nuklearmedicinske afdeling.
Ugeskr Laeger. 1998 Aug 3;160(32):4621-5.
This study reports a bibliometric analysis of 860 scientific publications of which 763 are papers in scientific journals emanating from departments of clinical physiology and nuclear medicine in Denmark in the years 1989-1994. The number of publications decreased significantly over time. The 763 papers were published in 239 different scientific journals, 80% in journals with an official "impact factor". The average impact per paper remained almost constant over time and was significantly above the national average. A close relationship was found between the number of papers from a department and its cumulated impact. In an analysis of 217 papers a direct relation was found between the journal impact factor and the citation factor. A linear relation was found between cumulated citations and time, and the number of citations per year reached a maximum 3-7 years after publication, whereas the general maximum for all medical specialties is 2-3 years. It is concluded that the total number of scientific papers from Danish departments of clinical physiology & nuclear medicine fell in the years 1989-1991, but the impact per paper was almost constant and above the national average. There seems to be a good agreement between journal impact factor and overall citation frequency in papers from clinical physiology & nuclear medicine.
本研究报告了对860篇科学出版物的文献计量分析，其中763篇是1989年至1994年间丹麦临床生理学和核医学部门发表在科学期刊上的论文。出版物数量随时间显著减少。这763篇论文发表在239种不同的科学期刊上，80%发表在具有官方“影响因子”的期刊上。每篇论文的平均影响力随时间几乎保持不变，且显著高于全国平均水平。发现一个部门的论文数量与其累积影响力之间存在密切关系。在对217篇论文的分析中，发现期刊影响因子与被引因子之间存在直接关系。累积被引次数与时间之间存在线性关系，每年的被引次数在发表后3至7年达到最大值，而所有医学专业的一般最大值为2至3年。得出的结论是，1989年至1991年间，丹麦临床生理学和核医学部门的科学论文总数有所下降，但每篇论文的影响力几乎保持不变且高于全国平均水平。临床生理学和核医学论文的期刊影响因子与总体被引频率之间似乎有很好的一致性。
