英文摘要 |
The purpose of this study is to analyze and compare journal citation data, from Journal Citation Reports on the Web 2000, of general internal medicine and surgical medicine. The distributions of six kinds of citation data, i.e. source items, citation frequency, impact factor, immediacy index, citing half-life and cited half-life are given and discussed in detail. The correlation between each pair of citation data, for example source items and citation frequency, is determined based on the Pearson correlation tests. The following results of this work reveal: the frequently published journals are cited more frequently and also with high impact factor and immediacy index, in addition, they are usually accompanied with short citing half-life (usually cite current literature). The impact factor and immediacy index has significant correlation with citation frequency. A significant correlation also exists between impact factor and immediacy index. However there is no correlation between cited half-life and other citation data, except citation frequency and citing half-life. |