title: Environmental health citation patterns: mapping the literature 2008-2010.
abstract: OBJECTIVE
  This research seeks to understand the publication types and ages cited most often in environmental health literature and the most commonly cited journal titles.
  
  
  METHODS
  From the 43,896 items cited in Environmental Health Perspectives and the Journal of Environmental Health during 2008-2010, 2 random samples were drawn: First, 1,042 items representing all citations were analyzed with respect to publication type, age, and Internet link. Second, the cited journal name and citation age were recorded for 1,038 items culled from only citations to journal articles. All journal titles were classified into Bradford zones and assigned subject disciplines.
  
  
  RESULTS
  Journal articles (n = 891, 85.5%) were the most heavily cited publication type. Cited items' publication years ranged from 1951 to 2010. Close to half (49.1%) of all cited items were published 5 or fewer years previous. Sixteen journal titles (3.9%) accounted for 32.5% of all cited journal articles. The 3 most common subject disciplines-"Public, Environmental & Occupational Health," "Environmental Sciences," and "Toxicology"-accounted for 21.6% of all unique journal titles and 45.3% of all citations.
  
  
  CONCLUSIONS
  Environmental health citation patterns differ from other public health disciplines in terms of cited publication types, cited journals, and age of citations.
authors: Education Technology Librarian, Mayo Clinic Libraries, Mayo Clinic, 200 First Street Southwest, Rochester, MN 55905, USA. mlrethlefsen@ gmail.com
authors: Melissa L
authors: ML
authors: Rethlefsen
authors: Alison M
authors: AM
authors: Aldrich
mesh_terms: D022126:Access to Information; D015706:Bibliometrics; D004782:Environmental Health; D010506:Periodicals as Topic / Q000706:statistics & numerical data
references: Arch Environ Occup Health. 2010 Jul-Sep;65(3):173-5
references: 20705578
references: Environ Res. 1992 Oct;59(1):114-24
references: 1425501
references: J Med Libr Assoc. 2010 Oct;98(4):293-9
references: 20936067
references: Occup Environ Med. 2000 Oct;57(10):706-9
references: 10984344
references: J Med Libr Assoc. 2007 Oct;95(4):408-15
references: 17971888
references: BMC Public Health. 2006 Dec 15;6:301
references: 17173665
references: Arch Environ Occup Health. 2009;64 Suppl 1:43-54
references: 20007116
references: Eur J Public Health. 2007;17 Suppl 1:14-8
references: 17666416
references: J Med Libr Assoc. 2007 Jul;95(3):260-6
references: 17641756
references: Arch Environ Occup Health. 2009;64 Suppl 1:32-42
references: 20007115
references: Arch Environ Occup Health. 2010 Apr-Jun;65(2):106-10
references: 20439230
references: J Med Libr Assoc. 2002 Jul;90(3):310-6
references: 12113516
references: J Med Libr Assoc. 2007 Apr;95(2):e58-65
references: 17443238
references: PLoS One. 2010 Oct 18;5(10):e13636
references: 20976155
references: J Med Libr Assoc. 2007 Jan;95(1):e6-9
references: 17252058
references: Am J Epidemiol. 2003 Mar 1;157(5):399-408
references: 12615604
references: Bull Med Libr Assoc. 1997 Jul;85(3):278-83
references: 9285128
references: Trop Med Int Health. 2004 Nov;9(11):1142-50
references: 15548309
references: Am J Prev Med. 2006 Mar;30(3):211-6
references: 16476636