Embase: Using Emtree to enhance your searching - 27 March 2013

Using the Emtree thesaurus to enhance

your searching

Your host: Ann-Marie Roche Your presenter: Ian Crowlesmith

Welcome to our Embase webinar!

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Need to know...

Agenda as announced1. Review Emtree update policy, including backposting

2. Recent enrichments in medical device terminology

3. Optimizing retrieval using Emtree

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Using the Emtree thesaurus to enhance your searching

Today’s webinar(including all announced topics above)

1. What you need to know about Emtree

2. How to search Emtree in Embase.com

3. Using Emtree to get the best out of your Embase search

4. Q&A (including opportunity for live demo)

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Orthopedics/Spine

Sub-Segments Products by sub-segment1

Dental

Cardiovascular / Implantable

Biodevice / Diagnostics

Ophthalmic

Surgical and Laboratory equipment

Imaging and monitoring equipment

• Hand held instruments, lasers dental chairs• Cements and impression materials, implants

• Orthopedic replacements• Implantable spinal devices

• Dental equipment • Dental materials

• Cataract surgery products, intraocular lenses,• Contact + prescription lenses, eye care equipment

• Ophthalmic systems and devices• Consumer eye products

• Pacemakers, defibrillators, heart-lung machine• Artificial organs, neurostimulators, hearing aids

• Cardio implants and devices• Non-cardio electro-medical implantable

devices

• Robotics, advanced wound care, sutures • Catheters, lab scales, furnaces, laboratory instruments

• Surgical equipment and systems• Lab and hospital furniture and supplies

• Devices for analysis of blood, tissues samples; chemical reagents, specialized microscopes

• Insulin + pain control pumps, drug/device combos

• In vitro diagnostics• Medication delivery / dialysis tools

• Ultrasound, MRI, cat scanners• X-ray equipment and medicine, fluoroscopes• Monitoring machines, remote-patient care

• High-tech imaging equipment• Irradiation apparatus• Monitoring & safety engineered devices

• Hip and joint replacements, bone nails screws• Spinal stimulators, thoracolumbar implants

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Medical Device industry segments

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isn’t functioning properly should be considered for metal ion testing. Adverse effects related to the ion levels include skin rash, visual impairments, depression, kidney impairment and thyroid dysfunction.

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Source: http://www.fda.gov/MedicalDevices/Safety/AlertsandNotices/ucm335775.htmSee also: http://www.fda.gov/MedicalDevices/DeviceRegulationandGuidance/Overview/ClassifyYourDevice/ucm051530.htm

http://www.fda.gov/MedicalDevices/Safety/AlertsandNotices/ucm335775.htm



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What you need to know about Emtree1. Emtree is a faceted, polyhierarchical thesaurus (14 facets)

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What you need to know about Emtree2. Focus on drugs and devices, with dynamic updating

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

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Function Search date: in 2011Emtree Preferred Term: 4 [n [1 (2 cyano 1

oxoethyl) 4 methyl 3 piperidinyl] n methylamino]pyrrolo [2,3 d]pyrimidineCandidate Term: tofacitinib

Embase Most records are indexed with: 4 [n [1 (2 cyano 1 oxoethyl) 4 methyl 3 piperidinyl] n methylamino]pyrrolo [2,3 d]pyrimidine(A few records are indexed with tofacitinib as candidate term)

Search 4 [n [1 (2 cyano 1 oxoethyl) 4 methyl 3 piperidinyl] n methylamino]pyrrolo [2,3 d]pyrimidine most results tofacitinib retrieves some hits(these are the records in which tofacinib is a candidate term)

3. Backposting

What you need to know about Emtree

Function Search date: in 2011 Search date: > Jan-2012Emtree Preferred Term: 4 [n [1 (2 cyano 1

oxoethyl) 4 methyl 3 piperidinyl] n methylamino]pyrrolo [2,3 d]pyrimidineCandidate Term: tofacitinib

Preferred Term: tofacitinibSynonym: 4 [n [1 (2 cyano 1 oxoethyl) 4 methyl 3 piperidinyl] n methylamino] pyrrolo [2,3 d]pyrimidine

Embase Most records are indexed with: 4 [n [1 (2 cyano 1 oxoethyl) 4 methyl 3 piperidinyl] n methylamino]pyrrolo [2,3 d]pyrimidine(A few records are indexed with tofacitinib as candidate term)

Via backposting, all records (for all years) are indexed with: tofacitinib

Search 4 [n [1 (2 cyano 1 oxoethyl) 4 methyl 3 piperidinyl] n methylamino]pyrrolo [2,3 d]pyrimidine most results tofacitinib retrieves some hits(these are the records in which tofacinib is a candidate term)

4 [n [1 (2 cyano 1 oxoethyl) 4 methyl 3 piperidinyl] n methylamino]pyrrolo [2,3 d]pyrimidine maps to tofacitinib

Both terms same results (all years)

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Questions so far ?

What you need to know about Emtree

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How to search Emtree in Embase.com

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(…)

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(… continued)

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Questions so far ?


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1. Identify and search core concepts on Emtree using “Find Term”

(review relevant articles for possible additional terms)

- explode concepts for broad retrieval (e.g. ‘hip prosthesis’/exp )

- exact search for precise results (e.g. ‘Mckee Farrar prosthesis’/de )

- major focus for highest precision (e.g. ‘Mckee Farrar prosthesis’/mj )

- phrase search for increased sensitivity (e.g. hip:de )

(candidate terms are found using :de but not /de)

Combine using Query Builder or within Session Results, or:

Take to Drug / Disease search (see step 3)

Using Emtree to get the best out of your search

Search strategy (1)

(to be continued)

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Search strategy (1): initial approach

Question: where are hip implants in Emtree ?

Solutions: (1) use Find Term hip hip prosthesis (2) search ‘hip implant’:ti and review index

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Search strategy (1): revised approach

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Search strategy (1): compiled results

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1. Identify and search core concepts on Emtree using “Find Term”(review relevant articles for possible additional terms)- explode concepts for broad retrieval (e.g. ‘hip prosthesis’/exp )- exact search for precise results (e.g. ‘Mckee Farrar prosthesis’/de )- major focus for highest precision (e.g. ‘Mckee Farrar prosthesis’/mj ) - phrase search for increased sensitivity (e.g. hip:de )

(candidate terms are found using :de but not /de)Combine using Query Builder or within Session Results, or:Take to Drug / Disease search (see step 3)


Search strategy (1)

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1. Identify and search core concepts on Emtree using “Find Term”(review relevant articles for possible additional terms)- explode concepts for broad retrieval (e.g. ‘hip prosthesis’/exp )- exact search for precise results (e.g. ‘Mckee Farrar prosthesis’/de )- major focus for highest precision (e.g. ‘Mckee Farrar prosthesis’/mj ) - phrase search for increased sensitivity (e.g. hip:de )

(candidate terms are found using :de but not /de)Combine using Query Builder or within Session Results, or:Take to Drug / Disease search (see step 3)

2. Add additional concepts from free text(e.g. concepts not represented in Emtree)

3. Consider drug & disease subheadings- search floating subheadings (to be demonstrated)- add subheadings to specific drug/disease terms (cf. step 1)


Search strategy (2/3)

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Search strategy (2): add concepts from free text

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Search strategy (3): add disease subheadings

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Search strategy (3): intermediate results

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Search strategy (4): systematic reviews

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(Back to) Search strategy (3): specific disease subheadings

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Search strategy (3): specific disease subheadings

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Using Emtree to get the best out of your searchResults: article #1

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Results: article #2

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Using Emtree to get the best out of your searchOriginal article

(… continued)

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Using Emtree to get the best out of your searchComparison with MeSH

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Medical devices in Emtree: a summary1. Emtree structure

Pre-2012: Apparatus , equipment and supplies Post 2012:- General apparatus …- Laboratory apparatus …- Medical apparatus …

2. Emtree terms

Jan 2012: 900 medical device terms

Jan 2013: 2500 medical device terms

Apr 2013: 3200 medical device terms

3. Emtree is key to getting the best search results• Browsing Emtree => explode, /de, major focus, phrase search• Use Query builder / add subheadings for drugs / diseases• Augment search using judiciously chosen free text phrases• Review articles to find new relevant index terms and repeat

Sources consulted include:- http://www.fda.gov/MedicalDevices (for classifications)- MeSH (Medical Subject Headings)- EMMET (Elsevier Merged Medical Thesaurus)- ECRI (Universal Medical Device Nomenclature System)- http://www.clarimed.com/medical-devices

http://www.fda.gov/MedicalDevices





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e-helpdesk• Our next webinar is an introduction on April 24 and we will focus

on EBM on May 22, after we get back from MLA.• Go to http://www.elsevier.com/online-tools/embase/support for

all Embase webinars and archives.

Please fill out the survey that appears on you screen after leaving the webinar.

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Embase: Using Emtree to enhance your searching - 27 March 2013

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Transcript of Embase: Using Emtree to enhance your searching - 27 March 2013