title: Which literature retrieval method is most effective for GPs?
abstract: BACKGROUND
  Evidence-based medicine requires new skills of physicians, including literature searching.
  
  
  OBJECTIVE
  To determine which literature retrieving method is most effective for GPs: the printed Index Medicus; Medline through Grateful Med; or Medline on CD-ROM.
  
  
  METHODS
  The design was a randomized comparative study. In a continuing medical education course, three groups of health care professionals (87 GPs and 16 other health care professionals) used one of the literature retrieval methods to retrieve citations on four search topics related to general practice. For the analysis in pairs, we used the search results of the 75 participants who completed all four assignments. As outcome measures, we used precision, recall and an overall search quality score; we also had a post-course questionnaire on personal characteristics, experience with computers, handling medical literature and satisfaction with course instruction and search results.
  
  
  RESULTS
  The recall and overall search quality scores in the Index Medicus groups (n = 32) were higher (P = <0.001) than those in the CD-ROM groups (n = 31). In addition, the search quality scores in the Grateful Med groups (n = 12) were higher (P < 0.003) than those in the CD-ROM groups. There were no differences in precision.
  
  
  CONCLUSIONS
  In the period 1994-1997, the printed Index Medicus was the most effective literature retrieval method for GPs. For inexperienced GPs, there is a need for training in electronic literature retrieval methods.
authors.affiliation: University Library, Department of Education and Department of General Practice, University of Groningen, Groningen, The Netherlands.
authors.forename: A A
authors.initials: AA
authors.lastname: Verhoeven
authors.forename: E J
authors.initials: EJ
authors.lastname: Boerma
authors.forename: B
authors.initials: B
authors.lastname: Meyboom-de Jong
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D016251:CD-ROM; D016009:Chi-Square Distribution; D003197:Computer Literacy; D003258:Consumer Behavior; D004502:Education, Medical, Continuing; D005260:Female; D016240:Grateful Med; D006801:Humans; D016247:Information Storage and Retrieval / Q000145:classification / Q000379:methods; D008523:MEDLARS; D016239:MEDLINE; D008297:Male; D010551:Personality; D010821:Physicians, Family / Q000193:education; D011795:Surveys and Questionnaires; D014584:User-Computer Interface