scoping the literature for your research bid
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Scoping the literature for your research bid. Unit 4. Unit 4. This unit builds on the search techniques we looked at in Unit 3 In this unit we will cover: What Methodological filters are How to use Methodological filters Examples of filters Applying filters Brief activity 3. - PowerPoint PPT PresentationTRANSCRIPT
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Scoping the literature for your
research bidUnit 4
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Unit 4This unit builds on the search techniques we looked at in Unit 3
In this unit we will cover:•What Methodological filters are•How to use Methodological filters•Examples of filters•Applying filters•Brief activity 3
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Methodological Filters
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• A search filter is search strategy that you add on to your existing subject search. The filter attempts to retrieve high-quality studies from your subject search
• Filters work in one of two ways:– by identifying particular publication types or study designs
most likely to answer a question– by isolating subject or free-text terms most likely to be
associated with high-quality studies
What is a methodological filter?
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How do I use a methodological filter?
Step One: Carry out a subject search as usual using MeSH terms and/or free text
Step Two: Apply any logical limiters such as Year and/or Language
Finally: Apply the methodological filter that is appropriate to the type of question you are asking?
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An example of a therapy methodological filter
Step One: explode Myocardial Infarction/ (9211) AND explode Adrenergic beta-Antagonists/ (4302) = 320
Step Two: Limit by Year>96 and Language=English = 206
Finally: Limit to CLINICAL-TRIAL in the Publication type = 37
Here we have done our subject search in step one, applied some limits in step two and finally added a simple, one-line filter (clinical-trial.pt.) in step three
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Types of filter
• One-line filter
• Maximum sensitivity filter- aims to find as many relevant papers as possible, but may therefore pick up some non-relevant ones
• Maximum specificity filter- aims to eliminate as many non-relevant papers as possible, but may therefore miss some relevant ones
• Mid-range (or optimised) filter- aims to balance out sensitivity and specificity
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Some one-line filters
• Using methodological filters on MEDLINE– e.g. For diagnosis try “Sensitivity” as a text word– e.g. For therapy try “Clinical Trial” in Publication Type– e.g. For prognosis try “cohort-studies” as MeSH– e.g. For (a)etiology try “risk” as a text word
• NB. MEDLINE is still the No. 1 database for diagnosis, prognosis & (a)etiology searches and Cochrane Library is No. 1 for therapy
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A methodological filter for Diagnosis added to a search (lines 4-7 below)
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Applications of filters
• Try adding a “quick one-liner” to a scoping search
• Or try using the automatic Clinical Queries service to filter your results:– In NHS Evidence– or Pubmed– http://www4.ncbi.nlm.nih.gov/PubMed/clinical.html or
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Clinical queries can be used in Healthcare databases Advanced search
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Clinical queries can be used in PubMed(www.pubmed.gov)
Enter a subject search in the text box and then choose your filter by clicking the buttons below it- easy!
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Activity 3
• Conduct a search for the topic you have planned in units 1 and 2 on PubMed or Medline and one other database.
• Add a Methodological filter or Clinical query to your search
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And finally...• Citations: where will I use them?
– Applicants details– Scientific summary– Lay summary– Relevance to funding stream/NHS– Project aims– Background– Project plan and costs– Project management– Research dissemination methods, IP– Ethics
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And Finally...(2)
• What do they add / give to your application?– Lit review indicates the size and nature
or problem– Acknowledge previous work– Emphasize currency by pointing to
ongoing policy/developments?– Provide evidence of applicants skills and
experience
– Show that you know your stuff!
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Observations from a funding panel
• References should be properly formatted• Don’t cite yourself/your colleagues too much!• Demonstrate you have up-to-date knowledge
of the research area• Don’t ignore similar research studies, cite them
but clearly explain how yours is different or put the case for repeating previous research
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And that’s all folks…
• Thanks for working through the course• We really hope you found it helpful, and that elearning has worked
for you• For more elearning courses, check the RDS website at:
• http://www.rds-yh.nihr.ac.uk/
• And to complete the course evaluation, go to:• http://www.surveymonkey.com/s/D2BK6X2