title: Publication times, impact factors, and advance online publication in ophthalmology journals.
abstract: OBJECTIVE
  Publication speed of peer-reviewed journals may play a major role in early dissemination of knowledge and may raise the citation index. In this study, we evaluated the publication speed of ophthalmology journals.
  
  
  METHODS
  Observational study.
  
  
  METHODS
  Observational study of bibliometric data in published ophthalmology journals.
  
  
  METHODS
  A list of ophthalmic journals featured in the 2010 Journal Citation Report was obtained on September 1, 2011. A total of 12 articles were chosen randomly from each of these journals published between January and December 2010. Median publication time and interquartile range (IQR) were obtained from the full texts of the published articles.
  
  
  METHODS
  Time lag between submission and revision, acceptance, and publication of the manuscripts was calculated. Correlation between publication time lag and journal impact factor as well as advance online publication was analyzed.
  
  
  RESULTS
  A total of 51 ophthalmic journals were included. There was no statistically significant difference in the impact factors of journals based on their reporting of submission, revision, or acceptance times of the manuscripts (both P>0.05, Wilcoxon test). The median peer review and publication time of all ophthalmology journals was 133 days (IQR, 100.5-171.5) and 100 days (IQR, 62.9-166.3), respectively. There was no correlation between the journal impact factors and publication time lag (Spearman correlation). Approximately half of the ophthalmology journals (n = 26; 50.98%) published online in advance. Journals with advance online publication had higher impact factors compared with those without this feature (median, 1.692 [IQR, 1.05-2.80] vs. 1.02 [0.39-1.53]; P = 0.015, Mann-Whitney U test). For journals with advance online publication, the median time from acceptance to advance online publication (74.3 days [IQR, 48.3-115 days]) was significantly shorter than the median time between acceptance and print publication (170.75 days [IQR, 101.4-217 days]; P<0.001, Wilcoxon test).
  
  
  CONCLUSIONS
  Publication time lag in ophthalmology journals was not correlated with journal impact factors. Advance online publication facility was provided by only half of the ophthalmology journals published in 2010. Journals with advance online publication had a higher impact factor compared with those without this feature.
  
  
  BACKGROUND
  The author(s) have no proprietary or commercial interest in any materials discussed in this article.
authors.affiliation: Joint Shantou International Eye Center, Shantou University & The Chinese University of Hong Kong, Shantou, China.
authors.forename: Haoyu
authors.initials: H
authors.lastname: Chen
authors.forename: Chun Hui
authors.initials: CH
authors.lastname: Chen
authors.forename: Vishal
authors.initials: V
authors.lastname: Jhanji
mesh_terms: D006801:Humans; D020407:Internet; D055811:Journal Impact Factor; D009885:Ophthalmology / Q000706:statistics & numerical data*; D017712:Peer Review, Research; D010506:Periodicals as Topic / Q000706:statistics & numerical data*; D011643:Publishing / Q000706:statistics & numerical data*; D013997:Time Factors