Lecture How to practice EBM: Finding the Evidence

This lecture includes these contents: How to practice ebm, finding the evidence, formulate a focused question, develop a search strategy, perform a search on pubmed,... Invite you to consult this lecture.

| _How to practice EBM:

~» Finding the Evidence

Owen Coxall, Tatjana Petrinic & Nia Wyn Roberts Bodleian Health Care Libraries

Session objectives

® Formulate a focused question

® Turn a focused question into a search

® Search TRIP & PubMed

Formulate a focused question

Patient / Problem / Population Intervention

Comparison Outcome

1 [l] * Lifestyle * Health

.Mums-to-be beware - Give up

.smoking before you get pregnant

| How any woman can run the danger of imposing these risks ) on her vulnerable unborn baby is beyond me

By

Miriam Stoppard

| Tweet 2 MiLike G) Send

Focused question

P: Pregnant smokers

|: nicotine replacement

C: N/A

O: cessation

Is nicotine replacement therapy an

effective and safe smoking cessation

treatment in pregnant women’?

Quick search

® THIP www.iripdatabase.com

® PubMed Clinical Queries

www.pubmed.gov

service of the U.S National Library of M

=> Swe) PubWuled www.pubmed.qgoy ¬ and the Nattonal Institutes of Health

Search| Pub + fe [ee Jf ier

Hands-on

® Formulate a focused question

° Use your own question or one of the

examples in your pack

° Record the search terms you're using

® Run a quick search on TRIP

www.iripdatabase.com

® Run a quick search on PubMed Clinical

Queries www.pubmed.gov

Run a full search strategy

Why bother?

® Too few results

® Too many results

® Irrelevant results

® Submitting a funding proposal

® Writing a guideline

® Conducting a systematic review

a Cornbine terms with

_~, OR

omoking OR tobacco — either term can be

present

4

4

|

|

ị

ì

|

a

W 5

4

a

Ỉ

a

a

a

Cornbine terms with AND

smoking AND cessation — both terms must be

present

Quick tips

® Take a common word stem and look for

spelling variations e.g

° smok* - will retrieve papers smoking, smoker,

smokers but also smoked salmon

® Phrase searching

° Use double quote marks if you want words to

appear next to each other e.g

“smoking cessation”

Develop a search strategy

1 pregnan”

2 smoking or smoker”

3 nicotine replacement OR nicotine

patch”

4 cessation OR stop* OR quit*

5 1 AND 2 AND 3 AND 4

Perform a search on PubMed

4 service of the U.S National Library of Medicine

== : =

and the National Institutes of Health

All Databases PubMed Nucleotide Protein Genome Structure

Search PubMed * for | Go Clear

Searching tips: PubMed

Subject searching - use MeSH

° Subject headings added to articles on

Medline

° Search the MeSH Database

® Finding similar articles — use the ‘Related articles’ link

www.pubmed.gov

ructure

Search | PubMed ` | for | 6o ]

Hands-on

® Take your focused question:

© Run further searches on PubMed

http://www.pubmed.gov

Flelp

® Finding the Evidence tutorials:

° EBM web-site — EBM tools — Finding the Evidence htfp:/www.cebm.net

® PubMed

5S Short online tutorials

° Quick guides to PubMed — basics, MeSH search and

MyNCBI

htto://www.nim.nih.gov/bsd/disted/pubmed.html