Literature Search - Overview

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This slide presentation shows you the overview and basic of how to search academic literature digitally.

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Literature Search - Overview

  1. 1. Literature Search Somkiat Asawaphureekorn M.D., M.Sc. (Clinical Epidemiology)Wednesday, August 24, 2011 1
  2. 2. Department of Ophthalmology, Faculty of Medicine, Srinagarind Hospital Khon Kaen University, Khon Kaen, Thailand.Wednesday, August 24, 2011 2
  3. 3. Before You SearchWednesday, August 24, 2011 3
  4. 4. Before You Search • Know your resources • Form your questions, search terms • Form your search strategy • Search syntax • Record your search strategy & results • Try all relevant databases • Refine your search as required 4Wednesday, August 24, 2011 4
  5. 5. Before You Search 5Wednesday, August 24, 2011 5
  6. 6. Before You Search Your Question 5Wednesday, August 24, 2011 5
  7. 7. Before You Search Your Question PICO 5Wednesday, August 24, 2011 5
  8. 8. Before You Search Your Question PICO Background Question? 5Wednesday, August 24, 2011 5
  9. 9. Before You Search Your Question PICO Yes Background Question? Text book 5Wednesday, August 24, 2011 5
  10. 10. Before You Search Your Question PICO Yes Background Question? Text book No Question Type 5Wednesday, August 24, 2011 5
  11. 11. Before You Search Your Question PICO Yes Background Question? Text book No Therapy Question Type Etiology Diagnosis Prognosis etc. 5Wednesday, August 24, 2011 5
  12. 12. Before You Search Your Question PICO Yes Background Question? Text book No Therapy Question Type Etiology Diagnosis Prognosis Study Design etc. 5Wednesday, August 24, 2011 5
  13. 13. Before You Search Your Question PICO Yes Background Question? Text book No Therapy Question Type Etiology Diagnosis Prognosis Study Design etc. RCT Systematic Review Cohort etc. 5Wednesday, August 24, 2011 5
  14. 14. Before You Search Your Question PICO Yes Background Question? Text book No Therapy Question Type Etiology Diagnosis Prognosis Study Design etc. RCT Identify the best available resource Systematic Review Cohort etc. 5Wednesday, August 24, 2011 5
  15. 15. Before You Search Your Question PICO Yes Background Question? Text book No Therapy Question Type Etiology Diagnosis Prognosis Study Design etc. RCT Identify the best available resource Systematic Review Cohort etc. Search the database 5Wednesday, August 24, 2011 5
  16. 16. General Search Strategy 6Wednesday, August 24, 2011 6
  17. 17. General Search Strategy Define relevant, searchable terms 6Wednesday, August 24, 2011 6
  18. 18. General Search Strategy Define relevant, searchable terms MeSH EmTree Free text 6Wednesday, August 24, 2011 6
  19. 19. General Search Strategy Define relevant, searchable terms MeSH EmTree Free text Define alternate terms 6Wednesday, August 24, 2011 6
  20. 20. General Search Strategy Define relevant, searchable terms MeSH EmTree Free text Define alternate terms Design search strategy 6Wednesday, August 24, 2011 6
  21. 21. General Search Strategy Define relevant, searchable terms MeSH EmTree Free text Define alternate terms Design search strategy AND OR NOT 6Wednesday, August 24, 2011 6
  22. 22. General Search Strategy Define relevant, searchable terms MeSH EmTree Free text Define alternate terms Design search strategy AND OR NOT Relevant results? 6Wednesday, August 24, 2011 6
  23. 23. General Search Strategy Define relevant, searchable terms MeSH EmTree Free text Define alternate terms Design search strategy AND No OR NOT Relevant results? 6Wednesday, August 24, 2011 6
  24. 24. General Search Strategy Define relevant, searchable terms MeSH EmTree Free text Define alternate terms Design search strategy AND No OR NOT Relevant results? Yes Summarize & Appraise the evidence 6Wednesday, August 24, 2011 6
  25. 25. General Search Strategy Define relevant, searchable terms MeSH EmTree Free text Define alternate terms Design search strategy AND No OR NOT Relevant results? Yes Summarize & Appraise the evidence GOOD Apply the evidence 6Wednesday, August 24, 2011 6
  26. 26. General Search Strategy Define relevant, searchable terms MeSH EmTree Free text Define alternate terms Design search strategy AND No OR NOT Relevant results? Yes Summarize & Appraise the evidence Poor GOOD Apply the evidence 6Wednesday, August 24, 2011 6
  27. 27. Bibliographic Databases • PubMed http://pubmed.gov • Scopus (SciVerse) http://www.scopus.com • ISI Web of Science (Science Citation Index) http://isiknowledge.com • LILACS (via “virtual health library”) http://regional.bvsalud.org 7Wednesday, August 24, 2011 7
  28. 28. Searching Systematic Reviews • Cochrane reviews  http://thecochranelibrary.org  Search Cochrane reviews via PubMed • AND cochrane database syst rev [journal] • AND (systematic [sb] OR meta-analysis [pt]) • Caution when using “Limit” boxes in “Advance search” • Non-Cochrane reviews (with comments)  CRD databases (Centre for Reviews and Dissemination @ NHS)  http://www.crd.york.ac.uk 8Wednesday, August 24, 2011 8
  29. 29. Searching Ref. of the Ref. • Scopus • Science Citation Index • Google Scholar http://scholar.google.com 9Wednesday, August 24, 2011 9
  30. 30. Free Academic Databases • Google Scholar http://scholar.google.com • Scirus http://www.scirus.com 10Wednesday, August 24, 2011 10
  31. 31. Open Access Journals • Directory of open access journals  www.doaj.org • Open access publishers  BioMed Central • www.biomedcentral.com  PLoS - Public Library of Science • www.plos.org  Dove Medical Press • www.dovepress.com  Hindawi Publishing Corporation • www.hindawi.com  Medknow Publications 11 • www.medknow.comWednesday, August 24, 2011 11
  32. 32. www.doaj.orgWednesday, August 24, 2011 12
  33. 33. Wednesday, August 24, 2011 13
  34. 34. Open Access Publishers 1 • BioMed Central  www.biomedcentral.com  Year founded 2000  Based in U.K.  An STM (Science, Technology and Medicine) publisher  Journals 219 14Wednesday, August 24, 2011 14
  35. 35. Open Access Publishers 2 • PLoS - Public Library of Science  www.plos.org  Year founded 2000  Based in San Francisco, U.S.A.  Journals 15Wednesday, August 24, 2011 15
  36. 36. Open Access Publishers 3 • Dove Medical Press  www.dovepress.com  Year founded 2003  Based in U.K.  Journals 114 16Wednesday, August 24, 2011 16
  37. 37. Open Access Publishers 4 • Hindawi Publishing Corporation  www.hindawi.com  Year founded 1997  Based in Cairo, Egypt  Journals >300 17Wednesday, August 24, 2011 17
  38. 38. Open Access Publishers 5 • Medknow Publications  www.medknow.com  Year founded 1999  Based in Mumbi, India  Journals >135 18Wednesday, August 24, 2011 18
  39. 39. PubMed Central • PubMed free full-text archives • Freely access with copyright protection 19Wednesday, August 24, 2011 19
  40. 40. Clinical Trials Database • Cochrane Library thecochranelibrary.org  Include hand-search clinical trials 20Wednesday, August 24, 2011 20
  41. 41. Clinical Trials Registration • ClinicalTrials.gov (NCT12345678)  http://www.clinicaltrials.gov  U.S. NIH, developed by NLM • Current Controlled Trials (ISRCTN12345678)  http://www.controlled-trials.com  NHS, U.K., published by BioMed Central • International Clinical Trials Registry Platform (WHO ICTRP) Search Portal  http://www.who.int/ictrp/en/ • Thai Clinical Trials Registry (TCTR-1234-56789)  http://www.clinicaltrials.in.th 21Wednesday, August 24, 2011 21
  42. 42. http://www.clinicaltrials.gov 22Wednesday, August 24, 2011 22
  43. 43. NCT 23Wednesday, August 24, 2011 23
  44. 44. http://www.controlled-trials.com 24Wednesday, August 24, 2011 24
  45. 45. 25Wednesday, August 24, 2011 25
  46. 46. 26Wednesday, August 24, 2011 26
  47. 47. http://www.clinicaltrials.in.th 27Wednesday, August 24, 2011 27
  48. 48. 28Wednesday, August 24, 2011 28
  49. 49. 29Wednesday, August 24, 2011 29
  50. 50. 30Wednesday, August 24, 2011 30
  51. 51. Clinical Trials Search Portal • International Clinical Trials Registry Platform (WHO ICTRP) Search Portal  A search tool, not a registration site  Search across multiple clinical trials registration • ClinicalTrials.gov • Current controlled trials • Australian New Zealand Clinical Trials Registry • Brazilian, Chinese, Indian, Korean, Cuban, German, Iranian, Japanese, Sri Lanka, Pan African, the Nethelands  http://www.who.int/ictrp/en/  http://apps.who.int/trialsearch/ 31Wednesday, August 24, 2011 31
  52. 52. http://www.who.int/ictrp/en/ 32Wednesday, August 24, 2011 32
  53. 53. 33Wednesday, August 24, 2011 33
  54. 54. 34Wednesday, August 24, 2011 34
  55. 55. 35Wednesday, August 24, 2011 35
  56. 56. Thai Journals Databases • Thai Index Medicus @ Chula http://library.md.chula.ac.th • Thai Medical Index @ Siriraj http://www.medlib.si.mahidol.ac.th • Thai-Journal Citation Index Centre (TCI) http://http://www.kmutt.ac.th/jif/public_html/ • Thai Theses Database http://thesis.stks.or.th 36Wednesday, August 24, 2011 36
  57. 57. Search Exhaustively • Electronic databases • Printed journals, hand-search • Unpublished articles • Expert seeking • Pharmaceutical companies data • Grey literature (non-peer reviewed items) • General web search engines  google, yahoo, etc. 37Wednesday, August 24, 2011 37
  58. 58. Wednesday, August 24, 2011 38
  59. 59. Other Special DatabasesWednesday, August 24, 2011 39
  60. 60. Special Databases • CINAHL (Cumulative Index of Nursing literature and Allied HeaLth)  http://www.cinahl.com • PsycINFO  http://www.apa.org/psycinfo/  APA, only Psychological abstracts (from 1800s) • CTSNet (The Cardiothoracic Surgery Network)  http://www.ctsnet.org/ • PEDro (Physiotherapy Evidence Database)  http://www.pedro.org.au/ 40Wednesday, August 24, 2011 40
  61. 61. Drugs & Chemical Databases • TOXNET  http://toxnet.nlm.nih.gov/ (can access via PubMed)  Toxicology, hazardous chemicals, environmental health, and toxic releases • Micromedex  www.micromedex.com  A drug information system  One of the most authoritative resource  From Thomson 41Wednesday, August 24, 2011 41
  62. 62. Thesis Search • NDLTD  www.ndltd.org  The Networked Digital Library of Theses and Dissertations  An international organization dedicated to promoting the adoption, creation, use, dissemination and preservation of electronic analogues to the traditional paper-based theses and dissertations  Open access with PDF files 42Wednesday, August 24, 2011 42
  63. 63. Full text Databases • PubMed Central www.pubmedcentral.nih.gov • HighWire Press highwire.stanford.edu • Free Medical Journals www.freemedicaljournals.com 43Wednesday, August 24, 2011 43
  64. 64. Wednesday, August 24, 2011 44
  65. 65. Reference Management Tool • Zotero: http://www.zotero.org • Need to run under Firefox (Firefox add-on) • Produced by  Center for History and New Media at George Mason University • Funded by  United States Institute of Museum and Library Services  Andrew W. Mellon Foundation  Alfred P. Sloan Foundation 45Wednesday, August 24, 2011 45
  66. 66. Knowledge & WisdomWednesday, August 24, 2011 46
  67. 67. Knowledge & Wisdom Knowledge … is proud that he has learnt so much,Wednesday, August 24, 2011 46
  68. 68. Knowledge & Wisdom Knowledge … is proud that he has learnt so much, Wisdom … is humble that he knows no more.Wednesday, August 24, 2011 46
  69. 69. Knowledge & Wisdom Knowledge … is proud that he has learnt so much, Wisdom … is humble that he knows no more.Wednesday, August 24, 2011 46
  70. 70. Knowledge & Wisdom Knowledge … is proud that he has learnt so much, Wisdom … is humble that he knows no more. The Task (1785) byWednesday, August 24, 2011 46
  71. 71. Knowledge & Wisdom Knowledge … is proud that he has learnt so much, Wisdom … is humble that he knows no more. The Task (1785) by William Cowper (1731 - 1800)Wednesday, August 24, 2011 46
  72. 72. Wednesday, August 24, 2011 47
  73. 73. THANK YOUWednesday, August 24, 2011 47

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