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IP - literature assignement

This presentation goes through the basics steps of searching literature for academic purposes. The main focus is on sport and health perspectives, but it can be used in many scientific genres.
by

Kristian Traberg

on 19 May 2014

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Transcript of IP - literature assignement

The literature search
Thank you for your attention!
Use more databases to cross check
How to improve your review further
What can a literature search provide?
... is to synthesize the knowledge in a certain area?
What are your experiences - Brainstorm!
1
2
3
4
5
Step
Choosing a subject
- The Aim
Making the aim precise is essential for your study.
Consequently; This phase is the most important at all.
Step
Choose the right search terms
Based on the aim, we can find the initial search terms.
Physical activity
Cognitive function
Children
Use more than one method
Search the words in the MeSH database
Find one or more relevant article and take a closer look at the subject terms (in PubMed)
An example...
Aim
Investigating the connection between physical activity and cognition in children
St
ep
Step
Step
Finding search terms
From the aim
From my "good" articles
From the MeSH database
MeSH terms (Medical Subject Headings)
Physical activity = Motor activity

Cognitive function = Executive function

Children = child (6 - 12 year olds)
Boolean logic
Combining searches
George Boole
1815 - 1864
Categorize...
Motor activity
Child
Executive function
Daily movement
Habitual activity
Exercise
Physical activity
Training
Cognitive function
Academic performance
School performance
Creativity
Executive control
Children
School children
Middle school
Pre-teens
The OR operator
The AND operator
The AND operator with three search terms
The NOT operator
http://www.ncbi.nlm.nih.gov/mesh
Choosing database(s)
Name
No. of citations
Acces
PubMed
21 million
Free of use
Scopus
Gain acces through your university or by paying a fee.
46 million
Content
All scientific subjects
Fields of biomedicine and health, covering portions of the life sciences, behavioral sciences, chemical sciences, and bioengineering.
PsycINFO
3 million
Gain acces through your university or by paying a fee.
The field of psychology
A couple of relevant databases
Motor activity
Daily movement
Habitual activity
Exercise
Physical activity
Training
and
Child
Children
School children
Middle school
Pre-teens
Executive function
Cognitive function
Creativity
OR
OR
OR
OR
Child
and
OR
OR
OR
OR
OR
OR
OR
OR
Academic performance
School performance
Executive control
Search terms
Combine
Choose database
PubMed
Search
3) Combine the categories with "AND"
2) Combine the terms within categories with "OR"
1) Perform the search individually for each term to check for mistakes (e.g. low numbers)
4) Evaluate on the search based on relevance and numbers of hits
6) Make adjustments, and...
REPEAT!
How much repetition is enough?
Many relevant, high percentage, but misses relevant studies
Narrow search
Many relevant, but small percentage. How can you check which it is?
Wide search
OR
The good fitted search
Many relevant studies, relatively high percentage
Search and repeat
e.g. find synonyms, abbreviations, singular and plurals of the chosen terms.
to try it
Motor activity
Daily movement
Habitual activity
Exercise
Physical activity
Training
and
Child
Children
School children
Middle school
Pre-teens
Executive function
Cognitive function
Creativity
OR
OR
OR
OR
Child
and
OR
OR
OR
OR
OR
OR
OR
OR
Academic performance
School performance
Executive control
Quick trial:
Team up two or three persons in groups.
Show what is known and what is not known
Identify areas where controversies exists
Phrase questions which require further investigation
Timeframe: appr. 5 minutes
Create a search for cognitive function and physical activity in children.
Free use and content
2.3 million
PubMed Central
Same as PubMed
5) Decide time limits
Two independent reviewers
Critical about study quality (Impact factor)
If the subject is broadly represented in the literature a meta-analysis can be considered
Carefully include "grey" literature
If the subject is poorly represented a semi-qualitative study can be considered
Be S
Example of matrix in word:
"121203 Search strategy"
Todays objectives
To get a hands on tool for use in this course
To get insight in the fine art of literature searching
Exclusion of articles: an example
156
34
Search in titles and abstracts
Thorough reading
Related citations and "grey" litterature
28
16
128
12
18
Extracts the results
For tomorrow: only read abstracts - maybe a few complete papers
Title
Methods
Findings
Presentation should be easy to overview. e.g. in a table.
For the exam: read the papers thoroughly
pecific
M
A
R
T
easureble
ttainable
elevant
ime-bound
(Take a few notes about your approach to the subject)
Discussion
Methods
Introduction
+ review studies
Full transcript