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Using Ovid® for Meta-Analysis & Systematic ReviewsChris Jung정민우Wolters Kluwer Health – Ovid 한국지사대표
Agenda
2Using Ovid® for Meta-Analysis & Systematic Reviews
1. Preparing for a Systematic Review
2. Ovid® MEDLINE vs. PubMed Content Platform Features Search Functionality Results Management Multiple Database Searching &
Deduplication
3. Structured Search Example
4. Ovid REMINER
3Ovid® MEDLINE PsycINFO・ 講習会
Preparing for a Systematic Review
Creating a Systematic Review
4Using Ovid® for Meta-Analysis & Systematic Reviews
Source: http://navigatingeffectivetreatments.org.au/
➀
➁
➂ Update, as required
Search
Meta-Analyse
Determining the question
5Using Ovid® for Meta-Analysis & Systematic Reviews
The PICO process is a technique used in evidence based practice to answer a clinical question PICO is an acronym for: Population, Intervention,
Comparison, Outcome
Source: Macquarie University Library, Libguides: http://libguides.mq.edu.au/content.php?pid=371659&sid=3291432
Defining a question
6Using Ovid® for Meta-Analysis & Systematic Reviews
Among Type 2 diabetic patients, do improved lifestyle habitsaffect HbAlc levels?
P Type 2 diabetic patients
I improved lifestyle habits
C HbAlc levels without improved lifestyle habits
O changes in HbAlc levels
Search for relevant data
7Using Ovid® for Meta-Analysis & Systematic Reviews
Cochrane collaboration recommends searching in Cochrane Central Register of Controlled Trials, Medline and Embase.
Search for relevant data
8Using Ovid® for Meta-Analysis & Systematic Reviews
SHKW
SHKW
SH
KWSH
KW
Topical lidocaine for neuropathic pain in adults,Cochrane Database of Systematic Reviews, Volume (6), 2016.
SH: Subject HeadingsKW: Keywords
Methodological limits• RCT and CCT (.pt)• Studies about drug therapy
Ovid®マルチファイル検索・上級検索モード
9Ovid® MEDLINE PsycINFO・ 講習会
Ovid® MEDLINE vs. PubMed
Introduction to MEDLINE on Ovid®
10Using Ovid® for Meta-Analysis & Systematic Reviews
Database Creation
MEDLINE In Process Segments
MEDLINE SegmentEpub Ahead of Print
Publisher Submitted
MEDLINE In Process
Pubmed Not MEDLINE
In Data Review
MEDLINE In Process MEDLINE
PubMed Search Page & Ovid®
11Using Ovid® for Meta-Analysis & Systematic Reviews
Advanced Search, Search Fields &
MultiField Search
Find Citation
Clinical Queries
Mapping and Search Tools
PubMed Search Page & Ovid®
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Find Citation
Clinical Queries
Mapping and Search Tools
Advanced Search, Search Fields & Multi-Field
Search
PubMed Search – automatic explode
13Using Ovid® for Meta-Analysis & Systematic Reviews
Ovid® MEDLINE Search – mapping process
14Using Ovid® for Meta-Analysis & Systematic Reviews
Explode –include all narrower
terms
Focus – find records where
this is the main concept
Ovid® MEDLINE Search – mapping process
15Using Ovid® for Meta-Analysis & Systematic Reviews
Export Options
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Text file or CSV Select all results
or a range
My NCBI vs.My Projects
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Add sub-foldersSearch all or selected projects
Collaborate with Annotations
Send Auto-Alert results directly to a project folder
Search multiple databases with deduplication
18Using Ovid® for Meta-Analysis & Systematic Reviews
Search multiple databases with deduplication
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Multiple database results combined, ranked by
relevancy (Basic Search) or chronological order (Advanced Search)
Filter results display by database
20Ovid® MEDLINE PsycINFO・ 講習会
Structured Search Example
StructuredSearching in Ovid®
21Using Ovid® for Meta-Analysis & Systematic Reviews
Among Type 2 diabetic patients, do improved lifestyle habits affect HbAlc levels?
Type 2 diabetes lifestyle HbAlc
Among Type 2 diabetic patients, do improved lifestyle habitsaffect HBAlc levels?
HLA PD Day
http://access.ovid.com/training/pico/english/pico_widget.htm
Structured Searching in Ovid®
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Map keywords to controlled Terms
Structured Searching in Ovid®
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Click on the scope note to see more
information about the subject heading
Structured Searching in Ovid®
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(diabetes adj2 (adult onset OR ketotis resistant OR maturity onset OR non?insulin dependent OR slow
onset OR stable OR type?2 OR type?ii)) OR mody OR niddm
Adjacency operator (searches for words
based on their proximity)
Truncation inside a word (stands for any
letter or nothing)
Structured Searching in Ovid®
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Click on the subject heading to
view the full thesaurus
Structured Searching in Ovid®
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Select ‘Explode’ to search the
narrower terms together with the
main term
Structured Searching in Ovid®
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Select a subheading to
refine the search to a specific
aspect of the controlled term, or leave blank to
perform a general search
Choose the Therapy subheading to limit results
to records indexed with the Therapy aspect of
Diabetes Mellitus, Type 2
Structured Searching in Ovid®
30Using Ovid® for Meta-Analysis & Systematic Reviews
‘exp’ means ‘explode’ (the search includes the narrower
terms as well as the main term)
‘/’ means this is a subject heading
‘[ ]’ contains the specified subheading(s)
Structured Searching in Ovid®
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Deselect ‘Map Term to Subject Heading’ for
keyword search
Structured Searching in Ovid®
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Select sets and combine with ‘AND’ or ‘OR’
StructuredSearching in Ovid®
33Using Ovid® for Meta-Analysis & Systematic Reviews
Among Type 2 diabetic patients, do improved lifestyle habits affect HbAlc levels?
Type 2 diabetes lifestyle HbAlc
Among Type 2 diabetic patients, do improved lifestyle habitsaffect HBAlc levels?
exp Diabetes Mellitus, Type 2/
((diabetes adj2 (adult onset OR ketotis resistant OR maturity onset OR non?insulindependent OR slow onset OR stable OR type?2 OR type?ii)) OR mody OR niddm)
Structured Searching in Ovid®
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Structured Searching in Ovid®
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Structured Searching in Ovid®
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life?style*
Right-side Truncation (search for all words
beginning with certain letters)
Structured Searching in Ovid®
37Using Ovid® for Meta-Analysis & Systematic Reviews
Structured Searching in Ovid®
38Using Ovid® for Meta-Analysis & Systematic Reviews
Structured Searching in Ovid®
39Using Ovid® for Meta-Analysis & Systematic Reviews
Structured Searching in Ovid®
40Using Ovid® for Meta-Analysis & Systematic Reviews
Structured Searching in Ovid®
41Using Ovid® for Meta-Analysis & Systematic Reviews
StructuredSearching in Ovid®
42Using Ovid® for Meta-Analysis & Systematic Reviews
Among Type 2 diabetic patients, do improved lifestyle habits affect HbAlc levels?
Type 2 diabetes lifestyle HbAlc
Among Type 2 diabetic patients, do improved lifestyle habitsaffect HBAlc levels?
exp Diabetes Mellitus, Type 2/
exp Life Style/
life?style*
((diabetes adj2 (adult onset OR ketotis resistant OR maturity onset OR non?insulindependent OR slow onset OR stable OR type?2 OR type?ii)) OR mody OR niddm)
Structured Searching in Ovid®
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What you do select when searching?
Structured Searching in Ovid®
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Where you do you click first?
Structured Searching in Ovid®
45Using Ovid® for Meta-Analysis & Systematic Reviews
hb?a1* OR (a1* adj1 (h?emoglobin* adj1 glycosylated)) OR (glycated adj1 h?emoglobin*) OR
(glycoh?emoglobin a) OR (glycosylated a1* adj1 h?emoglobin*) OR (glycosylated h?emoglobin*) OR
(h?emoglobin* adj1 a1*)
Structured Searching in Ovid®
46Using Ovid® for Meta-Analysis & Systematic Reviews
Where you do you click next?
Structured Searching in Ovid®
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Where you do check?
Structured Searching in Ovid®
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Structured Searching in Ovid®
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What you do de-select when
searching?
Structured Searching in Ovid®
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How do you combine the
searches?
StructuredSearching in Ovid®
51Using Ovid® for Meta-Analysis & Systematic Reviews
Among Type 2 diabetic patients, do improved lifestyle habits affect HbAlc levels?
Type 2 diabetes lifestyle HbAlc
Among Type 2 diabetic patients, do improved lifestyle habitsaffect HBAlc levels?
exp Diabetes Mellitus, Type 2/
exp Life Style/
life?style*
((diabetes adj2 (adult onset OR ketotis resistant OR maturity onset OR non?insulindependent OR slow onset OR stable OR type?2 OR type?ii)) OR mody OR niddm)
hb?a1* OR (a1* adj1 (h?emoglobin* adj1 glycosylated)) OR (glycated adj1 h?emoglobin*) OR (glycoh?emoglobin a) OR (glycosylated a1* adj1 h?emoglobin*) OR (glycosylated h?emoglobin*) OR (h?emoglobin* adj1 a1*)
exp Hemoglobin A, Glycosylated/
Structured Searching in Ovid®
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Final set – combine 3 subsets with ‘AND’
Structured Searching in Ovid®
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Structured Searching in Ovid®
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Clinical Queries - Limit to types of studies
Structured Searching in Ovid®
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StructuredSearching in Ovid®
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Among Type 2 diabetic patients, do improved lifestyle habits affect HbAlc levels?
Type 2 diabetes lifestyle HbAlc
Among Type 2 diabetic patients, do improved lifestyle habitsaffect HBAlc levels?
exp Diabetes Mellitus, Type 2/
exp Life Style/
life?style*
((diabetes adj2 (adult onset OR ketotis resistant OR maturity onset OR non?insulindependent OR slow onset OR stable OR type?2 OR type?ii)) OR mody OR niddm)
hb?a1* OR (a1* adj1 (h?emoglobin* adj1 glycosylated)) OR (glycated adj1 h?emoglobin*) OR (glycoh?emoglobin a) OR (glycosylated a1* adj1 h?emoglobin*) OR (glycosylated h?emoglobin*) OR (h?emoglobin* adj1 a1*)
exp Hemoglobin A, Glycosylated/
middle aged(45 years plus)
Clinical Queries:therapy (best balanceof sensitivity andspecificity
Structured Searching in Ovid®
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Save results in a Project folder
Meta-Analysis: Extraction of relevant data
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Source: http://training.cochrane.org/
Meta-Analysis: Analyze and combine the data
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Source: http://support.sas.com/kb/35/addl/fusion_35143_1_forestplot_2col.gif
Auto-Alerts – keep track of new research
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Auto-Alerts – keep track of new research
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Automatically run search
when database is
updated
Receive results via email and
deliver directly to a
project folder
Ovid REMINER
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Use REMINER…• If you have a collection of references from a database, or
another source, and want to find more of the same type of article, or set up an alert…
• If you have a structured Ovid search strategy based on mapping and search tools, and want to add a reliable set of keywords to broaden out your search…
• If you want to turn a gold standard list of references into a search filter for your library clients…
• If you want to explore the characteristics of the references which were used to produce a systematic review – identify similarities – subjects, authors, etc…
Ovid REMINER
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Export target records
Ovid REMINER
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Export as an ‘Excel Sheet’
and select desired fields (ab, sh, ti, ui/an, etc)
Ovid REMINER
65Using Ovid® for Meta-Analysis & Systematic Reviews
Convert into .xlsx file format and confirm desired fields from selected database
Ovid REMINER
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Upload the .xlsx file and ‘Submit Query’
http://tools.ovid.com/REMINER/
Ovid REMINER
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Select required fields and words and
phrases from the terms list to include in your search. Edit
as desired.
Ovid REMINER
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Confirm for sensitivity vs. specificity
Sensitivity = 23/93or 24.7% of Gold Standard Set
Ovid REMINER
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Review Gold Standard
references or references not
included in search results for key subjects and
confirm via scope notes
Ovid REMINER
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Edit the search to fit intention (sensitivity vs.
specificity), and Run Search
Ovid REMINER
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Export a record from in Word format, and include the
Search History
Confirm for sensitivity vs. specificity
Sensitivity = 93/93or 100% of Gold Standard Set
Review results
Ovid REMINER
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Copy the whole search
statement
Creating a Search Link
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Input the required information and paste the whole
search statement
Use the Search Link, as desired
http://demo.ovid.com/demo/search_link/search_link.htm
How to learn more
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Ovid Resource Center: resourcecenter.ovid.com
How to learn more
75Using Ovid® for Meta-Analysis & Systematic Reviews
PICO Resource Center: access.ovid/com/training/pico/english
How to learn more
76Using Ovid® for Meta-Analysis & Systematic Reviews
Ovid Expert Searches: http://resourcecenter.ovid.com/site/resources/expert_search/healthexp.html
Ovid REMINER:
http://tools.ovid.com/REMINER/
Filter Link Builder:
http://demo.ovid.com/demo/search_link/search_link.htm
Ovid Database Shortnames:
http://www.ovid.com/site/support/tech_support.jsp#tabs5
Widget Builder:
http://tools.ovid.com/widget/
Flinders Filters Smart Searching: Logical Steps to Building and Testing your LiteratureSearch:
https://sites.google.com/site/smartsearchinglogical/home
How to learn more
77Using Ovid® for Meta-Analysis & Systematic Reviews
Using Ovid® for Meta-Analysis & Systematic ReviewsChris JungRegional Sales Manager, South Korea
2016