title: Global research productivity of N-acetylcysteine use in paracetamol overdose: A bibliometric analysis (1976-2012).
abstract: OBJECTIVE
  The main objective of this study was to examine the publication pattern of N-acetylcysteine (NAC) research output for paracetamol overdose at the global level.
  
  
  METHODS
  Data were searched for documents that contained specific words regarding NAC and paracetamol as keywords in the title and/or abstract and/or keywords. Scientific output was evaluated based on a methodology developed and used in other bibliometric studies. Research productivity was adjusted to the national population and nominal gross domestic product per capita.
  
  
  RESULTS
  The criteria were met by 367 publications from 33 countries. The highest number of articles associated with the use of NAC in paracetamol overdose was from the United States of America (USA; 39.78%), followed by the United Kingdom (UK; 11.99%). After adjusting for economy and population power, USA (2.822), Iran (1.784) and UK (1.125) had the highest research productivity. The total number of citations at the time of data analysis (14 March 2014) was 8785 with an average of 23.9 citations per document and a median (interquartile range) of 6 (1-22). The h-index of the retrieved documents was 48. The highest h-index was 32 for USA, followed by 20 for UK. Furthermore, the highest number of collaborations with international authors for each country was held by USA with 11 countries, followed by Canada with 7 countries.
  
  
  CONCLUSIONS
  The amount of NAC-based research activity was low in some countries, and more effort is needed to bridge this gap and to promote better evaluation of NAC use worldwide. Our findings demonstrate that NAC use for paracetamol overdose remains a hot issue in scientific research and may have a larger audience compared with other toxicological aspects. Editors and authors in the field of toxicology might usefully promote the submission of work on NAC in future to improve their journal's impact.
authors.affiliation: Poison Control and Drug Information Center (PCDIC), College of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine Department of Clinical and Community Pharmacy, College of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine WHO Collaborating Centre for Drug Information, National Poison Centre, Universiti Sains Malaysia (USM), Penang, Malaysia saedzyoud@yahoo.com.
authors.forename: S H
authors.initials: SH
authors.lastname: Zyoud
authors.affiliation: Department of Clinical and Community Pharmacy, College of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine.
authors.forename: S W
authors.initials: SW
authors.lastname: Al-Jabi
authors.affiliation: Department of Pharmacology and Toxicology, College of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine.
authors.forename: W M
authors.initials: WM
authors.lastname: Sweileh
authors.affiliation: WHO Collaborating Centre for Drug Information, National Poison Centre, Universiti Sains Malaysia (USM), Penang, Malaysia.
authors.forename: R
authors.initials: R
authors.lastname: Awang
authors.affiliation: Acute Medical Unit, York Teaching Hospital, NHS Foundation Trust, York, UK.
authors.forename: W S
authors.initials: WS
authors.lastname: Waring
mesh_terms: D000082:Acetaminophen / Q000506:poisoning*; D000111:Acetylcysteine / Q000627:therapeutic use*; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000506:poisoning*; D015706:Bibliometrics; D035843:Biomedical Research / Q000706:statistics & numerical data*; D062787:Drug Overdose; D006801:Humans; D011643:Publishing / Q000706:statistics & numerical data*
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D000082:Acetaminophen; D000111:Acetylcysteine
keywords: Bibliometric; NAC; Scopus; acetaminophen; acetylcysteine; citations; paracetamol; poisoning