title: China's research status in emergency medicine: a 15-year survey of literature.
abstract: OBJECTIVE
  To investigate the research status of emergency medicine in China through literature search of international emergency medicine journals and retrospectively compare the outputs of emergency medicine articles of the 3 major regions of China-Mainland (ML), Taiwan (TW), and Hong Kong (HK).
  
  
  METHODS
  Emergency medicine journals were selected category from Science Citation Index Expand. Articles from the ML, TW, and HK were retrieved from PubMed database. The total number of articles, publication types, research contents, impact factors (IF), and articles published in each journal were conducted for quantity and quality comparisons.
  
  
  RESULTS
  A total of 1760 articles from 19 emergency medicine journals were searched, of which 395 were from ML, 1210 from TW, and 155 from HK. Accumulated IF of articles from TW (2451.109) was much higher than that of ML (851.832) and HK (328.579), whereas the average IF of articles from TW (2.02) was the lowest. The number of case reports was the highest, which was, 69 from ML, 637 from TW, and 25 from HK, respectively. Although emergency medicine was involved with multiple organs and multiple systems, the reports of trauma accounted for 25% of the research contents.
  
  
  CONCLUSIONS
  The total number of articles from both China and the rest of the world increased significantly from 2000 to 2014, especially ML. The total number of articles from TW was still much more than that of ML and HK, whereas the quality of articles from TW was not as good as ML and HK. Case report had the highest share of publication types, whereas the proportions of meta-analysis and observational study were the lowest. As for research contents, the proportion of trauma was still the highest.
authors.affiliation: Emergency Center, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
authors.forename: Weiwei
authors.initials: W
authors.lastname: Wang
authors.affiliation: Emergency Center, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
authors.forename: Ting
authors.initials: T
authors.lastname: Jiang
authors.affiliation: Emergency Center, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
authors.forename: Chunyu
authors.initials: C
authors.lastname: Li
authors.affiliation: Emergency Center, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Chen
authors.affiliation: Department of Cardiology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
authors.forename: Kejiang
authors.initials: K
authors.lastname: Cao
authors.affiliation: State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, China.
authors.forename: Lian-wen
authors.initials: LW
authors.lastname: Qi
authors.affiliation: State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Li
authors.affiliation: Department of Oncology, the First Affiliated Hospital of Medical University, Nanjing 210029, China. Electronic address: zhuwei198213@163.com.
authors.forename: Wei
authors.initials: W
authors.lastname: Zhu
authors.affiliation: Institute of Occupational Disease Prevention and Treatment, Jiangsu Provincial Center for Disease Prevention and Control, Nanjing 210028, China. Electronic address: zhubl@jscdc.cn.
authors.forename: Baoli
authors.initials: B
authors.lastname: Zhu
authors.affiliation: Emergency Center, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China. Electronic address: chenyandoc@163.com.
authors.forename: Yan
authors.initials: Y
authors.lastname: Chen
mesh_terms: D015706:Bibliometrics; D035843:Biomedical Research; D002681:China; D004635:Emergency Medicine; D006801:Humans; D010506:Periodicals as Topic