ebmgt course module 6: searching for scientific evidence
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EBMgt Course Module 6: Searching for Scientific EvidenceTRANSCRIPT
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Postgraduate Course
Evidence-based management:
Search for the best available scientific evidence
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Postgraduate Course
The 5 steps of EBP
1. Formulate a focused question (Ask)
2. Search for the best available evidence (Acquire)
3. Critically appraise the evidence (Appraise)
4. Integrate the evidence with your professional
expertise and apply (Apply)
5. Monitor the outcome (Assess)
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Postgraduate Course
4 sources of evidence
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Postgraduate Course
4 sources of evidence
Where & how to get scientific evidence?
?
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Postgraduate Course
Searching evidence
Where do we search?
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Postgraduate Course
Articles in peer reviewed journals
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Postgraduate Course
The way of the past …
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Postgraduate Course
The way of the present …
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Postgraduate Course
Online research databasesPostgraduate Course
ABI/INFORM
Business Source Elite
PsycINFO
Web of Knowledge
ERIC
Google Scholar
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Postgraduate Course
Comparing databasesPostgraduate Course
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Postgraduate Course
Searching evidence
How do we search?
Search Strategy
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Postgraduate Course
Two types of search strategies
Search strategy
Building blocks methodSnowball method
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Postgraduate Course
3. Building blocks2. Snowball1. Shotgun
Three types of search strategies
Search strategy
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Postgraduate Course
1. Shotgun method
Do a generic search on the Internet with the most
important keywords from your PICOC (Intervention
or Outcome).
Try to find out which related terms / words /
subjects are being used and look for references.
The output of your search will be input for
the snowball and building blocks method.
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Postgraduate Course
2. Snowball method
Starting from one book or article, you search for other literature on the same topic.
Snowballing backward to older publications by finding out
which publications were used by the author (see
bibliography of book or article).
Snowballing forward to more recent publications by
finding out how often that book or article has been
cited by other authors (see Web of
Knowledge or Google Scholar).
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Postgraduate CourseRelevant PICOC terms
Input for forward snowballing
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Postgraduate Course
Synonyms or
related terms
• ….
• ….
• ….
• ….
Synonyms or
related terms
• ….
• ….
• ….
• ….
Synonyms or
related terms
• ….
• ….
• ….
• ….
PICOC term 1 PICOC term 2 PICOC term 3
AND AND
OR OR
3. Building blocks method
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Postgraduate Course
P = back office employees
I = merger, integration, back office
C = status quo
O = economy of scale
C = healthcare, different organizational culture, unequal
1. Underline the keywords
2. Number the order of importance from 1-4
3. Building blocks: an example
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Postgraduate Course
P = back office employees
I = 1. merger, 3. integration, back office
C = status quo
O = 4. economy of scale
C = 5. healthcare, different 2. organizational culture, unequal
1. Underline the keywords
2. Number the order of importance
3. Building blocks: an example
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Postgraduate Course
Search terms
Operationalise your Pico elements!
O = long term profitability?
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Postgraduate Course
Search with these combinations
1. Thesaurus (su) OR Title (ti)
When there is no thesaurus term available search with
2. Title (ti) OR Abstract (ab)
1. su(“pay for performance") OR ti("pay for performance”)
2. ti(”360 degree feedback”) OR ab(”360 degree feedback”)
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Postgraduate Course
The advantages of ‘subjects’ or
‘thesaurus terms’
One single term for variations in spelling or synonyms
(organization, organization, company, corporation)
The term is relevant (therefore, so is the article)
Automatic “Explode” function (narrower terms are
automatically included)
Extra search options (subheadings, major topics, etc.)
3. Building blocks: thesaurus
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Postgraduate Course
The disadvantages of ‘subjects’ or
‘thesaurus terms’
Recent articles not yet indexed
“Index errors”
Sometimes there are no suitable subjects or thesaurus
terms (new concept, specific term)
3. Building blocks: thesaurus
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Postgraduate Course
corporate culture: organizational character, corporate identity
self steering teams: autonomous teams, self managed teams
360 degree feedback: multisource feedback, upward feedback,
Using the keywords from your PICOC may be sufficient, but always consider to do an additional search with:
synonyms
alternate spelling, translations
related terms / words / subjects
narrower or broader terms
3. Building blocks: additional search
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Postgraduate Course
1. Search with #1 PICOC term (incl. alternative terms,
synonyms, alternate spellings, truncations, etc.) in the
thesaurus OR title or title OR abstract
2. Search with #2 PICOC term (incl. synonyms, etc.)
3. Combine the results of step 1 and 2 with AND using the
search history
3. Building blocks: search query
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Postgraduate Course
3. Building blocks: Boolean operators
AND = both terms (apples AND oranges)
OR = either one of these terms (apples OR oranges)
NOT = without this term (fruit NOT oranges)
NEAR = near this term (apples NEAR oranges)
* = replaces 0,1 or more characters (apple*= apple,
apples, applejack, applejuice, applepie, etc.)
?= replaces 1 character (organi?ation= organisation,
organization)
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Postgraduate Course
orangesapples
apples AND oranges apples OR oranges
orangesapples
3. Building blocks: Boolean operators
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Postgraduate Course
3. Building blocks: an example
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Postgraduate Course
• Merger
• Fusion
• Combination
• Take over
• Acquisition
• Unification
• …
1. Merger
• Healthcare organization
• Non profit
• Not for profit
3. Health care
Intervention Context
• Corporate culture
• Organizational
behavior
• Organizational
character
• Corporate
identity
• Core beliefs
• Shared values
2. Culture
Comparison
AND
OR
Define keywords & related terms
OR
AND
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Postgraduate Course
Start up
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Postgraduate Course
Always search for thesaurus terms
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Postgraduate Course
Always search for thesaurus terms
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Postgraduate Course
Use the history function to combine results
Combining results
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Postgraduate Course
Use the history function to combine results
Combining results
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Postgraduate Course
Narrow your results
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Postgraduate Course
Narrow your results
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Postgraduate Course
Save your results
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Postgraduate Course
3. Building blocks: summary
1. Formulate a focused question and break it down into keywords (PICOC),
2. Underline the 2 to 4 most relevant keywords,
3. Start with the most relevant keyword: is it listed in the thesaurus? If not: search with (title OR abstract).
4. Repeat your search with alternative terms, synonyms or alternate spellings.
5. Combine the outcome: (thesaurus OR title) + (title OR abstract) + (alternative terms) with OR (use the history function!)
6. Repeat above steps for keyword 2
7. Combine the outcome of your search with keyword 1 and 2 with AND (use the history function!)
8. Filter the articles with “studies” (subject > studies)
9. Read the titles and abstracts of your results, select the relevant articles and safe them.
TIP: No full text available in ABI/Inform or BS Premier? Try Google Advanced.
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Postgraduate Course
Learning through play !
Try all buttons
Make lots of mistakes
Have fun !