Impact factor of Cardiovascular Research in 2000: all time high!

Impact factor in 2000 the usual way of expressing citation frequency, but has the advantage that it permits easier comparison of the impact Fig. 1 shows that Cardiovascular Research will score an of consecutive year volumes of the journal. Fig. 2 shows all time high impact factor of 3.59 in the year 2000. This an optimum for the citation frequency of the 1995 contents impact factor reflects the citations during the year 2000 to in year 5 since publication (i.e. during 1999) and in year 4 the contents of our journal in the years 1998 and 1999. for the 1996 contents (i.e. also during 1999) [1]. The Although the official impact factor of the Institute for impact factor is a mixture of citation during year 3 of what Scientific Information will only be communicated at the was published two years before and of citation during year end of 2001, the accuracy of our previous estimates may 2 of what was published one year before with year one as be appreciated from a comparison of the solid and dotted the year of publication. Thus, the optimal citation frelines in Fig. 1. quency is obtained during years that no longer have In Fig. 2 we show the impact of the contents of significance for the calculation of the official impact factor. Cardiovascular Research of the years 1995 till 1999 For the contents of the more recent years (1997 till 1999) during the years since publication. This graph differs from the optimal citation frequency cannot yet be determined.