Embase contentandcoverage.April 2014

Embase® is a registered trademark of Elsevier BV.

Presented by Ian Crowlesmith

23 April [email protected]

Your host:Ann-Marie Roche CONTENT AND COVERAGE

ON EMBASE

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NEED TO KNOW

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CONTENT AND COVERAGEON EMBASE: AGENDA

Ian Crowlesmith | 23 April 2014 | Content and Coverage on Embase

1. Scope and journal coverage2. Country & language

coverage3. Conference coverage4. Articles in Press / In Process5. Overlap with MEDLINE6. Embase currency

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CONTENT AND COVERAGEON EMBASE


1. Scope and journal coverage

2. Country & language coverage

3. Conference coverage4. Articles in Press / In Process5. Overlap with MEDLINE6. Embase Currency

5Ian Crowlesmith | 23 April 2014 | Content and Coverage on Embase

EMBASE SCOPE

NO SIGNIFICANT CHANGE SINCE 2012

Other topics 28%

Including: public health, general surgery, nursing, dentistry, veterinary science


EMBASE JOURNALS

TWO YEARS AGO : 7,960 JOURNALS COVERED (MARCH 2012)

2,368 journals

Indexed at Embase

Unique to Embase

Search:

[embase]/lim

3,028 journals

Indexed at Embase

Also covered by MEDLINE

Search:

[embase]/lim AND [medline]/lim

2,564 journals *

Indexed by MEDLINE

Also in MEDLINE

Search:

[medline]/lim NOT [embase]/lim

Indexed at Embase (5,396 titles)

Indexed by MEDLINE (e.g on PubMed) (5,592 titles)

* Converted to Embase format (see “Coverage of MEDLINE in Embase” white paper, May 2011)


EMBASE JOURNALS

THIS YEAR : 8,436 JOURNALS COVERED (MARCH 2014)

2,790 journals

Indexed at Embase

Unique to Embase

Search:

[embase]/lim

3,138 journals

Indexed at Embase

Also covered by MEDLINE

Search:

[embase]/lim AND [medline]/lim

2,508 journals *

Indexed by MEDLINE

Also in MEDLINE

Search:

[medline]/lim NOT [embase]/lim

Indexed at Embase (5,948 titles)

Indexed by MEDLINE (e.g on PubMed) (5,646 titles)

* Converted to Embase format (see “Coverage of MEDLINE in Embase” white paper, May 2011)


EMBASE JOURNALS 2014

EXTRACT FROM THIS YEAR’S LIST

Source: http://www.elsevier.com/online-tools/embase/about


JOURNAL SELECTION

KEY FACTORS .

Journal quality scored- editorial board / peer review process

- articles written in English language- publication by a major publisher

Journal topic & source- journal topic: core, medium, marginal (or out

of scope)- country of publication- article language (minimal requirement: English abstract)Journal

selection

- core topic journals of lower quality may be selected- marginal topic only higher quality journals selected- international representation from all countries

if possible


JOURNAL GROWTH

2010 - 2014

2010 2011 2012 2013 20140

500

1000

1500

2000

2500

3000

3500

Embase unique

Shared titles

MEDLINE unique

Journals covered in Embase each year

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EMBASE JOURNALS BY COUNTRY

8,436 JOURNAL TITLES (MARCH 2014)

49.7%

33.4%

9.5% 7.4%

North America

EuropeAsia

RoW *

* RoW = Rest of the World (esp. Australia & New Zealand, Africa, South America)


MEDLINE JOURNALS (ON PUBMED)

5,646 JOURNAL TITLES ** (MARCH 2014)

48.7%

40.5%

6.3% 4.4% Europe

North America

Asia RoW

**As defined within Embase (some MEDLINE titles are merged in Embase)


JOURNALS UNIQUE TO EMBASE

2,790 JOURNAL TITLES NOT IN MEDLINE

51.6%

18.9%

16.0%13.5%

North America

Europe

Asia

RoW

81% of Embase-unique titles are from outside North America


ASIAN JOURNALS IN EMBASE (2014)

Country Embase (total) MEDLINE Unique in Embase India 234 48 186 Japan 221 154 67 China 149 88 61 South Korea 62 21 41 Pakistan 34 5 29 Singapore 30 10 20 Taiwan 18 8 10 Hong Kong 14 3 11 Bangladesh 11 3 8 Malaysia 10 4 6 Nepal 7 5 2 Thailand 6 4 2 Indonesia 2 1 1 Sri Lanka 2 1 1 Philippines 2 1 1


ARTICLE LANGUAGE (LAST 5 YEARS)Language Embase (per year) * MEDLINE (per year) * Unique in Embase

English ** 877,186 (90%) 664,207 (92%) 213,000

Chinese 27,861 (2.9%) 11,523 (2.2%) 16,300

German 17,051 (1.7%) 7,421 (1.0%) 9,600

French 13,491 8,469 5,000

Spanish 12,582 6,839 5,700

Japanese 7,762 5,761 2,000

Russian 6,275 6,094 200

Portuguese 4,918 3,560 1,400

Polish 3,479 1,791 1,700

Turkish 3,264 545 2,700

Italian 2,880 1,522 1,400

Dutch 2,618 899 1,700

Czech 1,557 (0.16%) 585 (0.08%) 1,000

* Average: April 2009 – April 2014 ** excl. conference abstracts


ENGLISH VS NON-ENGLISH ARTICLES

2009 2010 2011 2012 20130.0

200,000.0

400,000.0

600,000.0

800,000.0

1,000,000.0

English (total)English (MEDLINE)Non-English (total)Non-English (MEDLINE)

Articles published per year in Embase 5-YEAR TREND

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CONFERENCES IN EMBASE

1,000 CONFERENCES/YEAR COVERED FROM 2009


CONFERENCE ABSTRACTS

CURRENTLY 300,000 ABSTRACTS/YEAR


CONFERENCE INDEXING

RESULTS CAN BE FILTERED BY “MEDICAL DEVICE”


CONFERENCES ABOUT DEVICES

SEE THE “CONFERENCE” FILTER . . .


CONFERENCES AB0UT DEVICES (2)

. . . SHOWING CONFERENCES RANKED BY THE NUMBER OF

ABSTRACTS

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coverage3. Conference coverage4. Articles in Press / In

Process5. Overlap with MEDLINE6. Embase currency

EMBASE WORKFLOW

Articles in Press (AiPs) *

In process records (IPs) *

Fully indexed records

Conference abstracts *

single step

<1 week

<1 week

260K recordsDeduplication+ conversion

Articles (pre-pub)

Journal issue (published)

Journal (supps) (published)

MEDLINE articles

1m records

<1 week

300K records

update update

5,948 journals2,100 journals

800K records* includes Automatic Indexing (AI)


ARTICLES-IN-PRESS & IN-PROCESS RECORDS

SEARCHING USING QUICK LIMITS


ARTICLES IN PRESS

RECORD DISPLAY

EMBASE WORKFLOW

Articles in Press (AiPs)

In process records (IPs)


Conference abstracts

single step

<1 week


Articles (pre-pub)



MEDLINE articles

1m records

<1 week

300K records

update update


800K records

<1 week


OVERLAP OF EMBASE WITH MEDLINE

TOTAL RECORDS

OVERLAPPING (DEDUPLICATED) RECORDS

“Embase” not MEDLINE: 6,073,183

MEDLINE not “Embase”: 9,091,369

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EMBASE WORKFLOW

Articles in Press (AiPs)

In process records (IPs)


Conference abstracts

single step

<1 week


Articles (pre-pub)



MEDLINE articles

1m records

<1 week

300K records

update update


800K records

<1 week


EMBASE CURRENCY VS MEDLINE

FULLY INDEXED RECORDS (DATA FROM 10 (BI)WEEKLY JOURNALS *)

2009

2010

2011

2012

2013

2014

-4.0

-2.0

0.0

2.0

4.0

6.0

8.0 Weeks ahead (Embase on Embase.com vs MEDLINE on PubMed)

* JAMA, New England Journal of Medicine, The Lancet, Nature, Science, PNAS, Circulation, J. Neuroscience, J. Biological Chemistry, Ann. Internal Medicine


RECORDS LICENSED FROM NLM

(MEDLINE NOT “EMBASE” RECORDS)


MEDLINE VS EMBASE CURRENCY

AVERAGE PROCESSING TIME = 4-5 DAYS


CONTENT AND COVERAGE ON EMBASE

WHAT HAVEN’T WE COVERED ?

Emtree thesaurus (especially recent enhancements)Embase indexing (including automatic indexing) /

comparison with indexing on MEDLINESpecific topics such as Pharmacovigilance, Medical

Devices & Systematic ReviewsHow to optimize searching using all the above

features & topics in Embase

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CONTENT AND COVERAGE ON EMBASE

SUMMARY OF WHAT WE HAVE COVERED

Embase currency

• Fully indexed records are loaded within 2 weeks on average

• Currency of fully indexed records from top journals is consistently better than on MEDLINE

• Records licensed from NLM are available in Embase within a week

Workflow & record types

• Conference coverage (since 2009), including using search filters to find relevant conference abstracts

• Articles in Press & In-process records (with automatic indexing)

• Deduplication between Embase & MEDLINE records

Scope & journal coverage

• Comprehensive scope with focus on drugs, clinical medicine and medical devices

• Journal policy, including annual growth & comparison vs MEDLINE

• Country & language of publication (incl. differences with MEDLINE)


THANK YOU ANY

QUESTIONS?


Ian Crowlesmith

Senior Product Manager, Content Development

[email protected]

38Ian Crowlesmith | 25 September 2013 | Searching for Adverse Events on Embase

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Embase contentandcoverage.April 2014