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Clicker Test – Do you think patients
  should be able to view doctors’ notes?
1. Definitely, yes
2. Absolutely no
3. Maybe… it depends




Delbanco T, Walker J, Bell SK, Darer JD, Elmore JG, Farag N, Feldman HJ, Mejilla R, Ngo L, Ralston JD, Ross SE,
      Trivedi N, Vodicka E, Leveille SG. Inviting Patients to Read Their Doctors' Notes: A Quasi-experimental Study
      and a Look Ahead. Ann Intern Med. 2012 Oct 2;157(7):461-70. doi: 10.7326/0003-4819-157-7-201210020-
      00002. PubMed PMID: 23027317.

       http://www.ncbi.nlm.nih.gov/pubmed/23027317
Finding Medical Information
Basis of Medicine, Unit 2, October 2012




                    Robin Featherstone, MLIS
                   Liaison Librarian (Medicine)
                  robin.featherstone@mcgill.ca
Where would you go first to find
  information about asthma therapies?
1. Cochrane Database of Systematic Reviews
2. Expert opinion
3. Facebook
4. Google
5. Google Scholar
6. PubMed
7. MedlinePlus
8. Textbooks (i.e., Harrison’s)
9. UpToDate
10. Other
In 1995, where would you go first to find
  information about asthma therapies?
1. Cochrane Database of Systematic Reviews
2. Expert opinion
3. Facebook
4. Google
5. Google Scholar
6. PubMed
7. MedlinePlus
8. Textbooks (i.e., Harrison’s)
9. UpToDate
10. Other
Objectives
By the end of this lecture, you will be
able to:
1.Differentiate between filtered and
unfiltered information
2.Describe the difference between
background and foreground questions
3.Begin to identify the best sources to
answer medical questions
Less time
       Less work
       Less evidence



                        Filtered
                         Filtered




                       Unfiltered
                       Unfiltered


                       Expert Opinion
More time
More work
More evidence
What are the
                                                       bronchodilatory effects
                                                       of combined inhaled
                                                       budesonide/formoterol
                                                       and
                                                       budesonide/salbutamol
                                                       in acute asthma?

                                      Foreground
                                       questions


What are the signs of an
asthma attack?
                              Background
                               questions
What is the pathology of
asthma?
                           Novice             Expert
A 25 year-old female has been recently diagnosed with
classical Hodgkin’s lymphoma (nodular sclerosing subtype).
Staging reveals that she is a stage IIA with a 4.5 cm nodal
mass in her neck and mediastinal nodes. Her hematologist
recommends            combined          modality         therapy
(chemotherapy/radiation therapy). The patient has done
some reading about therapy and is worried about the long
term effects of radiation especially the risk of breast cancer.




Background                                         Foreground
What is the pathophysiology of
Hodgkin’s lymphoma?




Background                       Foreground
For a 25 year old female with stage IIA
             Hodgkin’s lymphoma, is combined
             modality therapy superior to
             chemotherapy alone?




Background                               Foreground
A 35 year-old patients presents to the ER with a right leg swelling
x 3 days. The patient recently returned from a business trip in
Malasia and therefore you suspect a deep vein thrombosis (DVT).
It is the weekend and so the patient receives a CT angiogram that
does not reveal any pulmonary embolism and the venous portion
of the study does not reveal any above or below knee clots. That
said, you are still convinced that the patient may have a lower
limb DVT and so you ask for a lower limb doppler which requires
the radiologist to come into the hospital in the middle of the
night to perform the study. The radiologist is reluctant to come as
the venous phase of the CT angiogram was negative.




Background                                            Foreground
What diagnostic tests   are
performed for a DVT?




Background                    Foreground
Which of the following is more sensitive
             for detecting lower limb DVTs (both above
             and below knees): venous dopplers or CT
             angiograms?




Background                                Foreground
Foreground
            questions




   Background
    questions


Novice             Expert
Answers Background questions

  Audience Everyone

Compare to WebMD

  Contents Filtered information

      Cost Free

      URL http://www.nlm.nih.gov/
          medlineplus/
HARRISON’S PRINCIPLES OF INTERNAL
    MEDICINE (AKA Harrison’s Online)

   Answers Background questions

  Audience Novice and expert

Compare to Goldman’s Cecil Medicine

   Contents Filtered information

       Cost Institutional subscription

       URL http://bit.ly/harrisonsonline
Answers Background and foreground
           questions
  Audience Novice and expert

Compare to Harrison’s or DynaMed

  Contents Filtered & unfiltered information

      Cost Institutional subscription

      URL http://bit.ly/uptodatemcgill
Answers Foreground questions

  Audience Experts

Compare to MetaLib

  Contents Unfiltered information

      Cost Free

      URL http://scholar.google.ca/
Answers Foreground questions

  Audience Experts

Compare to EMBASE

  Contents Unfiltered information

      Cost Free

      URL http://www.ncbi.nlm.nih.gov/pubm
          ed
Answers Foreground questions

  Audience Experts

Compare to DARE

  Contents Filtered information

      Cost Institutional subscription

      URL http://bit.ly/cochranemcgill
Which tool contains the answer to the
      question: What is the treatment for
             Hodgkin’s disease?
1.   Google Scholar
2.   Harrison’s Online
3.   MedlinePlus
4.   PubMed
5.   UpToDate
6.   1 OR 4
7.   2 OR 3 OR 5
What kind of information does
         EMBASE contain?
1. Filtered
2. Unfiltered
3. Don’t know
What kind of question is this: Is written or video
educational interventions more effective at increasing
    vaccination intention rates in young adults?

1. Background
2. Foreground
3. Don’t know
Foreground
            questions




   Background
    questions


Novice             Expert
Less time
       Less work
       Less evidence



                        Filtered
                         Filtered




                       Unfiltered
                       Unfiltered


                       Expert Opinion
More time
More work
More evidence
Labs
Groups A, D & G            Groups B, E & H           Groups C, F & I
Mon Oct 22                 Tues Oct 23               Weds Oct 24
12:35 pm – 2:25 pm         12:35 pm – 2:25 pm        9:35 am – 11:25 am
Cybertheque, Redpath       Redpath e-classroom,      Rm 409, McIntyre (2nd
Library Basement           Rm 23                     floor, Life Sciences
                                                     Library)




                        Assignment
Take home searching exercises
Due: 5 pm on Tues, Oct 30
Submit to the Dean’s Office, 6th floor of McIntyre
Questions



     Robin Featherstone, MLIS
    Liaison Librarian (Medicine)
   robin.featherstone@mcgill.ca

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Finding Medical Information

  • 1. Clicker Test – Do you think patients should be able to view doctors’ notes? 1. Definitely, yes 2. Absolutely no 3. Maybe… it depends Delbanco T, Walker J, Bell SK, Darer JD, Elmore JG, Farag N, Feldman HJ, Mejilla R, Ngo L, Ralston JD, Ross SE, Trivedi N, Vodicka E, Leveille SG. Inviting Patients to Read Their Doctors' Notes: A Quasi-experimental Study and a Look Ahead. Ann Intern Med. 2012 Oct 2;157(7):461-70. doi: 10.7326/0003-4819-157-7-201210020- 00002. PubMed PMID: 23027317. http://www.ncbi.nlm.nih.gov/pubmed/23027317
  • 2. Finding Medical Information Basis of Medicine, Unit 2, October 2012 Robin Featherstone, MLIS Liaison Librarian (Medicine) robin.featherstone@mcgill.ca
  • 3. Where would you go first to find information about asthma therapies? 1. Cochrane Database of Systematic Reviews 2. Expert opinion 3. Facebook 4. Google 5. Google Scholar 6. PubMed 7. MedlinePlus 8. Textbooks (i.e., Harrison’s) 9. UpToDate 10. Other
  • 4. In 1995, where would you go first to find information about asthma therapies? 1. Cochrane Database of Systematic Reviews 2. Expert opinion 3. Facebook 4. Google 5. Google Scholar 6. PubMed 7. MedlinePlus 8. Textbooks (i.e., Harrison’s) 9. UpToDate 10. Other
  • 5. Objectives By the end of this lecture, you will be able to: 1.Differentiate between filtered and unfiltered information 2.Describe the difference between background and foreground questions 3.Begin to identify the best sources to answer medical questions
  • 6. Less time Less work Less evidence Filtered Filtered Unfiltered Unfiltered Expert Opinion More time More work More evidence
  • 7. What are the bronchodilatory effects of combined inhaled budesonide/formoterol and budesonide/salbutamol in acute asthma? Foreground questions What are the signs of an asthma attack? Background questions What is the pathology of asthma? Novice Expert
  • 8. A 25 year-old female has been recently diagnosed with classical Hodgkin’s lymphoma (nodular sclerosing subtype). Staging reveals that she is a stage IIA with a 4.5 cm nodal mass in her neck and mediastinal nodes. Her hematologist recommends combined modality therapy (chemotherapy/radiation therapy). The patient has done some reading about therapy and is worried about the long term effects of radiation especially the risk of breast cancer. Background Foreground
  • 9. What is the pathophysiology of Hodgkin’s lymphoma? Background Foreground
  • 10. For a 25 year old female with stage IIA Hodgkin’s lymphoma, is combined modality therapy superior to chemotherapy alone? Background Foreground
  • 11. A 35 year-old patients presents to the ER with a right leg swelling x 3 days. The patient recently returned from a business trip in Malasia and therefore you suspect a deep vein thrombosis (DVT). It is the weekend and so the patient receives a CT angiogram that does not reveal any pulmonary embolism and the venous portion of the study does not reveal any above or below knee clots. That said, you are still convinced that the patient may have a lower limb DVT and so you ask for a lower limb doppler which requires the radiologist to come into the hospital in the middle of the night to perform the study. The radiologist is reluctant to come as the venous phase of the CT angiogram was negative. Background Foreground
  • 12. What diagnostic tests are performed for a DVT? Background Foreground
  • 13. Which of the following is more sensitive for detecting lower limb DVTs (both above and below knees): venous dopplers or CT angiograms? Background Foreground
  • 14. Foreground questions Background questions Novice Expert
  • 15. Answers Background questions Audience Everyone Compare to WebMD Contents Filtered information Cost Free URL http://www.nlm.nih.gov/ medlineplus/
  • 16. HARRISON’S PRINCIPLES OF INTERNAL MEDICINE (AKA Harrison’s Online) Answers Background questions Audience Novice and expert Compare to Goldman’s Cecil Medicine Contents Filtered information Cost Institutional subscription URL http://bit.ly/harrisonsonline
  • 17. Answers Background and foreground questions Audience Novice and expert Compare to Harrison’s or DynaMed Contents Filtered & unfiltered information Cost Institutional subscription URL http://bit.ly/uptodatemcgill
  • 18. Answers Foreground questions Audience Experts Compare to MetaLib Contents Unfiltered information Cost Free URL http://scholar.google.ca/
  • 19. Answers Foreground questions Audience Experts Compare to EMBASE Contents Unfiltered information Cost Free URL http://www.ncbi.nlm.nih.gov/pubm ed
  • 20. Answers Foreground questions Audience Experts Compare to DARE Contents Filtered information Cost Institutional subscription URL http://bit.ly/cochranemcgill
  • 21. Which tool contains the answer to the question: What is the treatment for Hodgkin’s disease? 1. Google Scholar 2. Harrison’s Online 3. MedlinePlus 4. PubMed 5. UpToDate 6. 1 OR 4 7. 2 OR 3 OR 5
  • 22. What kind of information does EMBASE contain? 1. Filtered 2. Unfiltered 3. Don’t know
  • 23. What kind of question is this: Is written or video educational interventions more effective at increasing vaccination intention rates in young adults? 1. Background 2. Foreground 3. Don’t know
  • 24. Foreground questions Background questions Novice Expert
  • 25. Less time Less work Less evidence Filtered Filtered Unfiltered Unfiltered Expert Opinion More time More work More evidence
  • 26. Labs Groups A, D & G Groups B, E & H Groups C, F & I Mon Oct 22 Tues Oct 23 Weds Oct 24 12:35 pm – 2:25 pm 12:35 pm – 2:25 pm 9:35 am – 11:25 am Cybertheque, Redpath Redpath e-classroom, Rm 409, McIntyre (2nd Library Basement Rm 23 floor, Life Sciences Library) Assignment Take home searching exercises Due: 5 pm on Tues, Oct 30 Submit to the Dean’s Office, 6th floor of McIntyre
  • 27. Questions Robin Featherstone, MLIS Liaison Librarian (Medicine) robin.featherstone@mcgill.ca

Hinweis der Redaktion

  1. First of three lectures on medical information Unit 2 – General overview of medical information tools and PubMed searching labs Unit 8 – Pharmacology Resources & RefWorks training
  2. Cochrane: first available on the web in 1996 Facebook: known then as “The Facebook” – launched in 2004 Google: Larry Page and Sergey Brin had only just met at Stanford. They begin collaborating on their search engine, then known as “ BackRub ” in 1996 Google Scholar: released in Beta in 2004 MedlinePlus: consumer website launched in 1998 PubMed: while the index called Medline has been around since the 1970s , PubMed (the searchable web interface) was first released in 1996 UpToDate: Bud Rose’s single-author nephrology textbook went online in the early 1990s. Arguably the first modern medical textbook: Principles and Practice of Medicine – 1892 Key point: There are at least 7 new revolutionary tools for finding medical information invented within the last 18 years. Many of the attending staff at the MUHC and clinical faculty at McGill have been practicing medicine for 20 years at least.
  3. This is a highly simplified diagram of the medical literature. We’ll learn a lot more about the “levels of evidence” for medical information in January of 2014, right before you start clerkship. But, for an overview, it’s important to recognize the difference between filtered and unfiltered information. If a piece of information is “filtered,” that means an expert has collected many individual studies or opinions and created a summary. If a piece of information is unfiltered, it is either one single study or one person’s opinion. Information tools can be distinguished by the amount and the quality of unfiltered or filtered information they contain.
  4. Another useful way we can distinguish information is by the kind of questions that it answers. Medical questions can be either background question or foreground questions Background questions tend to be broad and we ask them to learn more about the fundamental aspects of a disease or topic. Background questions are commonly asked on MCCQEs. The answers to background questions may not be widely known, but they are considered common knowledge. For example… What are the signs of an asthma attack? Foreground questions tend to be narrow or specific, and we ask them to learn more about a particular case. The kinds of questions which will arise during patient encounters will most likely be foreground. For example… What are the bronchodilatory effects of combined budesonide formoterol and budesonide salbutamol in acute asthma? During the first two years of medical school, you’ll be asking mostly background questions. As you move into the clinical environment, you’ll start asking more and more foreground questions.
  5. Clinical scenarios, like this hematology case study will contain both kinds of questions. Sometimes you may have to answer a combination of background and foreground questions. Or you may have to answer a background question before you can address a foreground question.
  6. So, in this case, there is the background question: What is the pathophysiology of Hodgkin’s lymphoma?
  7. And then the foreground question related to treatment: Is combined modality therapy superior to chemotherapy alone? Or another foreground question could be: do the risks of developing breast cancer outweigh the benefits of combined modality therapy? There can be many questions in a single scenario
  8. Before we talk about the information tools which best answer each type of question, can you please read this scenario. With your neighbour, discuss the case and write down one foreground and one background question.
  9. Key point: Information sources for answering background questions tend to all be filtered. When answering foreground questions, you will find use a mix of unfiltered and filtered tools. Obviously, start with filtered tools and then look at individual studies. It all depends on how specific your question is.
  10. Which resource will answer this question? Answer: 7 – 1 OR 3 OR 5 Why? These are all filtered sources for answering background questions
  11. Remember: EMBASE is a database of individual articles, like PubMed. Answer 2 – it contains individual studies, which are unfiltered
  12. After the poll: ask the class > Where would you look to answer this question? Answer: 2 – Foreground question – best answered with an individual study – these are answered in tools like PubMed
  13. Key point: Information sources for answering background questions tend to all be filtered. When answering foreground questions, you will find use a mix of unfiltered and filtered tools. Obviously, start with filtered tools and then look at individual studies. It all depends on how specific your question is.
  14. Mention the levels of evidence
  15. Exam on the 26 th .