Searching the literature_Thawani

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  • MeSH descriptors are organized in 16 categories: category A for anatomic terms, category B for organisms, C for diseases, D for drugs and chemicals, etc. Each category is further divided into subcategories. Within each subcategory, descriptors are arrayed hierarchically from most general to most specific in up to eleven hierarchical levels. These trees
  • Selected results can also be sent to a clipboard area. Select “Send To Clipboard” from the dropdown menu.
  • Boolean operators are named after George Boole, an Englishman, who invented them as part of a system of logic in the mid-1800's
  • Searching the literature_Thawani

    1. 1. Biomedical information retrieval using PubMed ®<br />
    2. 2. Your money!<br />Lunch Money - Rs 65<br />Stationary - Rs 31<br />Certificate - Rs 04<br />Total - Rs 100<br />
    3. 3. Instructions<br />Use the computer as and when instructed to<br />No other use of the computer is permitted during the workshop<br />
    4. 4. Learning Objectives<br /> By the end of this session, you should be able to:<br />Understand how PubMed translates basic searches.<br />Use MeSHand Limits to refine your search.<br />Understand and use Boolean operators.<br />Develop a search strategy.<br />Download and email citations<br />
    5. 5. You have to search a thesis topic on types of drug and diet therapy for skin cancer<br />Search the web to see what has been already <br />done on this topic<br />
    6. 6.
    7. 7. Information Overload<br />
    8. 8.
    9. 9.
    10. 10. Try PubMed ®<br />Retrieval of core information<br />Looking at all the wrong places<br />
    11. 11. How do I access PubMed?<br />Directly at: http://pubmed.com<br />Or, National Library of Medicine’s homepage: http://www.nlm.nih.gov<br />
    12. 12. Figure 1. Illustration of how information is stored in the MEDLINE database<br />Vincent, B. et al. Oncologist 2006;11:243-251<br />Copyright ©2006 AlphaMed Press<br />
    13. 13. Try PubMed<br />
    14. 14.
    15. 15.
    16. 16. AvoidStopwords<br />9:07 AM<br />Superfluous words<br />types<br />of<br />and<br />for<br />
    17. 17.
    18. 18.
    19. 19. What is a Search Strategy?<br />A plan that helps you look for the information you need. <br />Search Strategy Tips<br />Pick a search topic<br />Divide topic into concepts <br /> Find words (keywords) or subject headings (MeSH) to represent these concepts <br />Refine your search to dates, study groups, etc., as appropriate. (Limits)<br />Combine concepts with Boolean (AND, OR, or NOT) connectors<br />
    20. 20. Types of drug and diet therapy for skin cancer<br />Patient population(Not defined)<br />Intervention/therapy (Drug & Diet therapy)<br />Comparison (Not applicable), and <br />Outcome (Skin cancer)<br />Find out the MeSH word for ‘Skin Cancer’<br />
    21. 21. What is MeSH?<br />MeSH – Medical Subject Headings<br />Controlled vocabulary terms<br />Epistaxis, Brain Edema, Otitis Media, Myocardial Infarction<br />9:07 AM<br />
    22. 22.
    23. 23. Click MeSH Database<br />9:07 AM<br />
    24. 24.
    25. 25. Select Limits<br />
    26. 26. to apply limits.<br />Search<br />Click<br />
    27. 27. Results are reduced<br />from 4,224 to 64<br />
    28. 28. Click Display Settings<br />
    29. 29. Select Abstract and click<br />Apply<br />9:07 AM<br />
    30. 30. Selected results can also be sent to a clipboard area. Select Send to Clipboard from the dropdown menu.<br />
    31. 31.
    32. 32. 9:07 AM<br />
    33. 33. Building Blocks(Boolean Operators)<br />AND narrows<br />OR broadens<br />NOT excludes<br />Always use in UPPERCASE<br />9:07 AM<br />
    34. 34. Using the Boolean operator AND between search terms returns only records that contain all of the search terms<br />2,79050<br />2,02152<br />22,18770<br />Vincent, B. et al. Oncologist 2006;11:243-251<br />Copyright ©2006 AlphaMed Press<br />
    35. 35. Using the Boolean operator OR between search terms returns all records that contain any of the search terms<br />Vincent, B. et al. Oncologist 2006;11:243-251<br />Copyright ©2006 AlphaMed Press<br />
    36. 36. Using the Boolean operator NOT between search terms returns only records that contain the first search term and not the second<br />Vincent, B. et al. Oncologist 2006;11:243-251<br />Copyright ©2006 AlphaMed Press<br />
    37. 37. Default Functions of PubMed<br />If no boolean between words, it assumes ‘AND’<br />salmonella hamburger = salmonella AND hamburger<br />If anything is written in WORD Alphabet (s) form, it assumes author<br />gupta p shah d<br />If journal name or pubmed version is typed, it searches it only in the journal<br />gupta p shah d lancet<br />9:07 AM<br />
    38. 38. 9:07 AM<br />
    39. 39. 9:07 AM<br />
    40. 40. Exercise 1<br /> Impact of daily vs weekly <br /> supplementation of iron and <br /> folic acid on <br /> hemoglobin status<br />
    41. 41. Impact of daily vs weekly <br /> supplementation of iron and <br /> folic acid on<br /> hemoglobin status<br />
    42. 42.
    43. 43. Exercise 2<br />Use MeSH Database to build a strategy that will find citations to articles about Statistics of Measles Outbreak. <br />Measles and Outbreak should be the major topics of the articles.<br />
    44. 44.
    45. 45. Exercise 3<br /> Your supervisor asks you to find an article he read in JAMA or New England Journal of Medicine about “Virtual colonoscopy” written by Mitka M.<br />
    46. 46.
    47. 47. Exercise 4<br />Find citations to articles about the ethics of kidney transplantation. <br />Filter to review articles. <br />Select 5 items and add them to the Clipboard.<br /> Go to the Clipboard and view the selected items in Abstract format and email the citations to your account.<br />
    48. 48. Where PubMed lacks?<br /><ul><li>Local, cultural scientific research
    49. 49. Non-indexed journals</li></li></ul><li>9:07 AM<br />
    50. 50. 9:07 AM<br />
    51. 51. Practice makes a man perfect<br />

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