Seminar #1 for Dental PG students


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Presentation #1 of 3 used in a workshop for postgraduate dentists at McGill. Animations (e.g. for AND/OR) not working on slideshare.

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  • So, our first question… (read question). How would you go about looking for the answer to this?
  • Show a Medline citation here…Different parts of the record. Get them to click on Find citation and then to type “Evolution of human teeth and jaws…”
  • Show a Medline citation here…Different parts of the record
  • Show a Medline citation here…Different parts of the record
  • Show a Medline citation here…Different parts of the record
  • Before searching MEDLINE or any other article index (a.k.a. database), the first step is to define your question and break it down into its separate concepts. Breaking down your question will help you to identify the subject headings in Medline that are used to describe articles about your topic.
  • There are 5 principles of online searching…Before searching MEDLINE or any other article index (a.k.a. database), the first step is to define your question and break it down into its separate concepts. Breaking down your question will help you to identify the subject headings in Medline that are used to describe articles about your topic.
  • This is different to Google where we just type in our search question. In databases, we search concepts separately.During this section will introduce searching concepts separately, MeSH, keywords, and then log in to MEDLINE and search for our concepts separately.
  • Why use MeSH?MESHPreferred list of terms used by the National Library of Medicine to index each article added to Medline / PubMedProvides a “controlled“ or consistent way of retrieving information that may use different terminology for the same concept. Indexers assign the most specific subject heading available, thus yielding more precise resultsKeywordsSearch title and abstract for the exact word or words you typeIn MEDLINE, keywords do NOT search full text of articleSearch article titles and abstracts to develop list of synonymsSearch for “cancer” and see what happens
  • Imagine having to use all of these synonyms in a search! MeSH makes your life easier…Before next slide – get them to do their first search in Medline – find the subject heading for dental caries.
  • Do I search for tooth decay? Dental caries? Dental decay?Explode “dental caries” to search ALL terms indented belowFocus your search to those documents in which your subject heading is considered the major point or focus of the article.
  • Will talk about AND/OR later, but for now this is a way of combining our terms to get exactly what we want.
  • Limits allow us to reduce the number of articles and only give us what we really want. So if we are only interested in elderly people, in articles in English or French, or published in the last 5 years, this is how.
  • And then show how to limit results in Medline. One limit at a time is best.
  • Evaluate your results, and be prepared to modify and repeat if necessary
  • Seminar #1 for Dental PG students

    1. 1. Information Literacy in Dentistry (part 1)Martin Morris / Liaison Librarian /
    2. 2. “ Everything you ever wanted to know about McGill libraries ” in a few numbers
    3. 3. 12There are 12branch libraries oncampus at McGill.TIPAll McGill libraries arewireless zones, mostbranches can lend you alaptop, and the LSL can lendyou an iPad for a week.
    4. 4. 5mAcross all sites,there are over5 million printvolumes andjournals at McGill.TIPIf you don’t want topay for photocopies,you can use one of ourbook scanners for freeand scan straight toyour USB key.
    5. 5. 1mIn addition to printmaterials, we haveover 1.2 millionebooks availablefor instant access.TIPThere is a separatesubcatalogue just forebooks. Just go to more info.
    6. 6. 40k…and there’smore. McGill hasover 40 000 onlinejournals, with9 000 availablefrom issue 1.TIPOur EZProxy system makesit easy for you to accessjournal articles even whenyou’re not on campus.More info at
    7. 7. 24We offer 24/7 studyspaces. There isalso a Sundaylibrarian service.TIPThe LSL is open 9am – 10pmMon – Thu, 9am – 5pmFridays, and on Sundaysfrom noon (plus there’s alibrarian available duringour Sunday opening!).
    8. 8. “ How can I access eBooks and eJournals when I’m away ” from campus?
    9. 9. Introducing EZProxy… EZProxy allows easy access to the library when you’re off campus.
    10. 10. EZProxy useful tip… + =
    11. 11. McGill Library Catalogue For links to McGill’s The catalogue online resources look out for the provides Find It @ McGill logolocation and loan The catalogue also status for all lists books and journals found in the our materials main teaching hospital libraries. http://catalogue.mcgill.ca10/4/2012 McGill Library 11
    12. 12. Signing in to the catalogueBarcodeThe 11 digit number above thebarcode on your McGill card.PINYour date of birth in the format:yyyymmdd.Example: 19801125 = Nov 25, 1980Sign in…to view when books are due;do renewals; locate pastexams; book a group study room;view your fines etc. 10/4/2012 McGill Library 12
    13. 13. Martin Morris Request a 514 398 4475 ext 09880 consult martin.morris@mcgill.ca Liaison ry-using/branches/lsl/staff/ librarians Online chat with a ibrary-assistance/askus/chat/ librarian
    14. 14. Subject guides ► Dentistry y-findinfo/subjects/ health/dentistry/ ► Clinical decision-making (Evidence-based medicine) y-findinfo/subjects/ health/evidence/ ► Full list of guides y-findinfo/subjects/health/10/4/2012 McGill Library 14
    15. 15. Mobile health ► Health Sciences Mobile Guide y-findinfo/subjects/ health/mobile/ ► McGill Library Mobile Site ► Recommended iPad apps y-using/computers/ tablets/apps10/4/2012 McGill Library 15
    16. 16. Other libraries► Interlibrary Loans Request material not held by McGill Library by filling in our form. Free of charge. rary-using/otherloans/lsl/► CREPUQ Card Allows you to borrow directly from other Quebec or Canadian university libraries. using/otherloans/crepuq/ 10/4/2012 McGill Library 16
    17. 17. “ What is the most effective way of finding the evidence in the ” dental literature?
    18. 18. A sample question… How effective is ozone therapy for treating dental caries?
    19. 19. Medical Databases ► MEDLINE Biomedicine, includes dental literature ► Embase Biomedicine and dentistry (European perspective) ► Web of Science Multidisciplinary research with citation searching McGill Library 19
    20. 20. A Medline RecordIndexing Status:This describes whetherthe record has been fullyindexed by the NationalLibrary of Medicine.
    21. 21. A Medline RecordAuthors / Title:Self-explanatory. Authornames are hyperlinked soyou can see other paperswritten by each author.
    22. 22. A Medline RecordSource:Information about the journalof publication and where tofind the article in that journal.
    23. 23. A Medline RecordMedical Subject Headings:Tags applied by librarians atNLM to make it easier to findarticles. More to come…
    24. 24. The 5 principles of online searching1. Define your question and break it down into its separate concepts.2. Search each concept separately.3. Combine search terms (AND/OR).4. Apply limits.5. Evaluate your results and modify your search strategy if necessary.
    25. 25. Principle #1Define your question and break itdown
    26. 26. Defining our question How effective is ozone therapy for treating dental caries ?10/4/2012 McGill Library 26
    27. 27. Principle #2Search each concept separately
    28. 28. Database SearchingDatabases can be searched in 2 ways:► Using subject headings Easier to search and leads to more relevant results.► Keyword / Text word searching Harder to search as you have to think of every possible synonyms for each concept. Usually gives less relevant results.
    29. 29. Why bother with MeSH? cancer tumor(s) There are tumour(s) Neoplasms/ 25,588 MeSH neoplasm(s) terms neoplastic
    30. 30. Another MeSH example… poverty financial social disparity distress poor extreme needPoverty/ breadline social inequity financially low income disadvantaged destitute
    31. 31. Dental caries in MeSHStomatognathic Diseases Tooth Diseases Tooth Demineralization Dental Caries Dental Fissures Root Caries
    32. 32. Defining our question How effective is ozone therapy for treating dental caries?10/4/2012 McGill Library 32
    33. 33. Principle #3Combine your search terms (AND/OR)
    34. 34. Boolean Operators: AND/ORAND directs the computer tosearch for every reference thatcontains all of the search termsspecified. Each term must bepresent in every reference. OR = tells the computer to retrieve every reference that has at least one of the search terms-- all terms do not have to be present in every reference.
    35. 35. Principle #4Apply limits
    36. 36. Limiting your searchAge groups Publication date ► Neonates, babies ► Last 5 years ► Elderly people ► From 1990 –Languages Publication Type ► English only ► Systematic Reviews ► French, German… ► Case histories
    37. 37. Defining our question How effective is ozone therapy for treating dental caries? Limit to review articles published in the last 5 years.10/4/2012 McGill Library 37
    38. 38. Principle #5Evaluate your results
    39. 39. “ I am not discouraged, because every wrong attempt ” discarded is a step forward. Thomas Edison
    40. 40. Now have a go yourselves… What can I do to alleviate dental anxiety in my child patients?
    41. 41. Summary Identify the individual concepts of your topic ► Select the database(s) to search. Search one term or concept at a time. ► Use the “Suggest subject term” feature if available ► Use the Explode feature to search all narrower terms Combine your concepts ► Use OR to combine terms that represent the same concept. OR increases retrieval. ► Use AND to combine terms that represent different concepts. AND decreases retrieval.
    42. 42. Summary cont’d… Apply any limits you need ► e.g. Language, dates, age groups, publication types. Evaluate your results ► And don’t be afraid to modify your strategy and start over if necessary► To get your articles, look for the icon to download or to locate it in the library► …and don’t forget that we have an ILL service if you need an article or book that we don’t have 10/4/2012 McGill Library 42
    43. 43. “ What can I do if I need more help with literature searching ” and finding articles?
    44. 44. Ask your Martin Morris liaison 514 398 4475 ext 09880 librarian Library library-assistance/classes workshops Reference / Information Desk library-using/branches
    45. 45. The 20-minute rule If you have not found what you are looking within 20 minutes… …it’s time to call me! However, I will ask you to show me the research you have done to date!
    46. 46. Any questions?