Analysis of the Impact Factor of Emergency Medicine Journals in the Past 10 Years

Twenty‐four journals in emergency medicine are listed according to the 2014 JCR Science Edition [Table 1]. Nine journals have originated from the USA, four from the UK, four from Germany, and others from seven different countries. The number of journals increased from 11 in 2005 to 24 in 2014. Compared with 2005 (or the 1st year IF documentation), the IFs of 17 out of 24 journals increased in 2014, with a median level of +62.42% (ranging from +0.31% to +344.44%), while seven journals’ IFs decreased, with a median level of −10.78% (ranging from −1.825% to −36.108%).