Embase® is a registered trademark of Elsevier BV. Embase® is a registered trademark of Elsevier BV.

Embase: An introduction to

indexing

Presented by Ann-Marie Roche

22 October 2014a.roche@elsevier.com

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• Webinar control panel:

• ‘chat’ for questions or ‘ask aquestion’

• minimize option for full screen view

• Q&A at the end of the webinar

• The goal is to understand how indexing works in Embase and how it impacts your search results.

NEED TO KNOWS

3FEB 2014 | EMBASE SALES PRESENTATION 3

EMBASE IS AS COMPREHENSIVE AS POSSIBLE

Percentage of relevant articles retrieved

0 % 50 % 100 %

Effor

t / to

ols

requ

ired

GOOGLE

EMBASE

PUBMED

SOURCE

SCOPUS

TEXT MINING

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ANATOMY OF AN INDEX

Methods section

Tables

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EMBASE INDEX

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EMBASE INDEX (DRUG SUBHEADINGS)

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EMBASE INDEX (DISEASE SUBHEADINGS)

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Focus on drugs and devices, with dynamic updating

INDEXING NEEDS A THESAURUS

Structure

Drug-rich content• >30,000 drug terms• ALL generics, trade names

& chemical names

Faceted structure• natural-language• synonym-rich• polyhierarchical

Dynamic updating• candidate term source list• updates 3x each year• all terms backposted

Content Updates

Medical devices• .> 3,000 device terms

(pre-2012: <1000 terms)

For further information: http://www.embase.com/info/what-is-embase/emtree

11FEB 2014 | EMBASE SALES PRESENTATION 11

NOT MISSING ANY IMPORTANT INFORMATION

Embase Medline

Humira 16,200 4048

Enbrel 19,711 4197

Remicade 30,347 9,493

Advair 2425 264Lantus 6101 1741

Rituxin 40,829 13,076

Avastin 35,591 1,086

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Searching for Adverse reactions

BROWSING EMTREE TO FIND DRUG NAMES

BROWSE EMTREE FACETS

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Searching for Adverse reactions

DRUG SEARCH

FIND A SPECIFIC DRUG TERM

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adverse reactions

FIND ADVERSE EVENTS FOR CISPLATIN

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adverse reactions to cisplatin

FILTER FROM LIST OF INDEXED DISEASES

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ADVERSE REACTIONS TO CISPLATIN

IN-DEPTH DRUG INDEXING

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DEFINITIONS OF ADVERSE EVENTS

ON EMBASE AND MEDLINE

Embase

PubMed / MEDLINEfirst 4 of >100 terms

"chemicals and drugs category/adverse effects"[MeSH Terms] NOT ("chemicals and drugs category/toxicity"[MeSH Terms] OR "chemicals and drugs category/poisoning"[MeSH Terms])

Search using:

Search using: "chemicals and drugs”/exp/dd_ae

only in humans

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Adverse reactions to cisplatin

EMBASE VS MEDLINE

Embase

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FINDING NEW DRUGS

Ref: http://www.news-sentinel.com/apps/pbcs.dll/article?AID=/20121115/NEWS/121119726/-1/LIVING

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FINDING NEW DRUGS

STEP 1: IDENTIFYING THE DRUG CATEGORY

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FINDING NEW DRUGS

STEP 2: SEARCH USING THE DRUG CATEGORY

Change /exp to /de and add ‘unclassified drug’ (see notes)

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FINDING NEW DRUGS

STEP 3: CANDIDATE TERMS NOT FOUND IN EMTREE

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FINDING NEW DRUGS

IDENTIFYING TRADE NAMES AND MANUFACTURERS

From drug index for this article

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FINDING NEW DRUGS

STEP 4: MORE INFORMATION ON TRADE NAMES AND LAB CODES

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Emtree is now updated 3x each year

Terms added and changed are listed: http://

www.embase.com/info/what-is-embase/emtree

New terms backposted to past years:

a) if indexed earlier as candidate terms

b) if previous PTs are assigned as synonyms

BACK-POSTING?

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BACK-POSTING?

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SEARCHING FOR MEDICAL DEVICES

NEW TREE STRUCTURE IN 2013 AND UPDATED IN 2014

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SEARCHING FOR MEDICAL DEVICES

USING FILTERS TO SEARCH FOR TRADE NAMES AND COMPLICATIONS

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From Emtree facet “Types of article or study” Include many more terms than check tags Now include “Topic terms” (from 2011)

Topic terms: 10 terms ending with (topic)

Topic terms were introduced in 2011 to differentiate between study types, indexed when the article IS the primary report for an RCT (for example), and articles in which that term is only a topic that is discussed.

SEARCHING FOR EVIDENCE: STUDY TYPES AND TOPIC TERMS

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Over 9m records in Embase are licensed from NLM

They currently come from over 2500 active journals … distributed over all years (1940 – present)

280,000 recs /yr

1974

MEDLINE RECORDS IN EMBASE

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2. EXPANDTo expose and summarize the information in biomedical articles beyond title and abstract: discovering in-depth data about drugs, diseases and medical devices

1. TRANSLATETo bring the semantic richness of medical terminology within your grasp: mapping many synonyms to a single (natural language) preferred terminology

3. FOCUSTo identify the key concepts hidden within those articles – what they are really about – providing you with a toolkit to find answers beginning with comprehensive searches

INDEXING PRINCIPLES

THANK YOU ANY

QUESTIONS?

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THANK YOU ANY

QUESTIONS?

32

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AND FOR MORE INFORMATION …

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For more information and questions please use Help in Embase, where you may also find all training and support materials and our full webinar schedule.

Our next Embase webinar is on November 26 and will focus on drug safety and device post-surveillance searching. We hope to have a special external guest also.

The slides and recording will be shared within 24 hours.

THANK YOU and SEE YOU NEXT TIME!