Beige Pink Retro Make People Like You More Mobile-first presentation

PHC 512

SEARCHING
STRATEGIES

AGaRrOoUnPLoDe1 b
Let's dive deep into the world of

searching strategy
Let's Go
Let's Go

WHAT SHALL WE
LEARN ABOUT
TODAY?

1 INTRODUCTION
2 PROCESS
3 APPLICATION

INTRODUCTION

A search strategy is an organized
structure of key terms used to search a

database.

Developing a search strategy is an
iterative process— that is, it involves

continual assessment and
refinement.

As keywords or key terms are used in
a search, their usefulness will be
determined by the search results.

Consequently, searching for
evidence is sometimes considered

more of an art than a science.

WHY DO WE
NEED IT?

IMPROVE
PRECISION
COST AND TIME
SAVINGS
REDUCE THE
TOTAL AMOUNT
OF EFFORT

LetN'seGxto?

THE PROCESS

1 Determining the research
question and building the
framework

2 Read up on the basics of the
question
Obtain as many articles as

3 possible for all of the search's
components

4 Review and refine
the search results

DETERMINING
THE RESEARCH
QUESTION AND
BUILDING THE
FRAMEWORK

a framework commonly used in the health
sciences to focus clinical questions

it involves structuring the question
around four types of clinical
information

P - patient /problem / population
I - intervention / indicator
C - comparison / control

O - outcome

The study found the use of PICO tended to
retrieve results for screening with greater
precision than those search strategies
formulated without the use of PICO
By creating a logic grid or concept map
can further enhance the search results

Cochrane association There's a lot amounts of

PICO annotations over RobotReviewer

biomedical research studies

has become available



a global network of health
professionals that provide access

to high quality medical
information is undergoing a large

manual annotation effort to
create a large repository of PICO
annotated MEDLINE articles, with
the intention of making content
and data in systematic reviews

more discoverable



a machine learning system that

uses supervised distance
supervision to train models that
automate the extraction of PICO
elements from systematic reviews.

It was found that the system
extracted PICO annotations with a
precision of 0.9 , outperforming other

existing methods.

READ UP ON
BASICS OF THE

QUESTION

HOW?

In conducting this step, approach
should be made towards the
tertiary resources then if the

information is not adequate, the
secondary resources is explored
then lastly the primary resources.

OBTAIN AS MANY
ARTICLES AS

POSSIBLE FOR ALL
OF THE SEARCH'S

COMPONENTS

M ESH

Medical Subject
Headings

allow a searcher to quickly identify
articles of interest.



MeSH terms - labels assigned to each
article in Medline in order to describe
what the article is about. The National
Library of Medicine employees with
training as ‘indexers’ look at each new
article added to Medline and assign to

it about 10–12 labels which best
describe the content of the article

HOW TO USE?

1)Find the disease that the article is
abo
ut

Use subheadings for further define what you want to
know about the topic

What if you are looking for a rare disease that has no
MeSH term available?

1.keyword searching - search for relevant terms
within such locations as the titles and/or
abstracts of articles

2.try a combination of MeSH terms and keywords
What if you receive very few results for a topic
which you know is well-researched?

3. look for the Year Introduced
4.If Year Introduced is not displayed, that term has

been in the database since the early 1960s




MeSH is an American da
tabase, so do use
american
spelling

2)Identify any additional aspects of your
question which can narrow down your search

results.

location of the dis
e
ase
treatments (drug/no drug)
diagnostic tests.
causes of a disease

3. Use Boolean operators

not - limits; exclusionary, restrict amd
exclude specific search terms
and - shrinks; indicate that all specified
conditions must be met in order for a
query to return true
or - broaden; at least one is true



4. Look at the MeSH terms assigned to the
article you found and see if there are any




additional terms w
hich might improve
your search strategy

REVIEW AND
REFINE THE

SEARCH
RESULTS

One way to do this is to check if
already identified relevant articles
are being captured by the search. If
not, the search strategy will need to

be modified accordingly.

Once the search is complete, the
results can be exported to bibliographic

management software such as
EndNote or Reference Manager. These

tools are useful for organizing the
search results, removing duplicate

citations, and selecting studies.

APPLICATION

THE ARTICLE

Diabetic peripheral neuropathy :
pharmacological interventions or
acupuncture - an evidence-based

perspective.

Aim : to derive a solution to a clinical
encounter, namely the management of
painful peripheral neuropathy (a result
of damage to the nerves located
outside of the brain and spinal cord
(peripheral nerves))

Clinical Question : what are the
beneficial and harmful effects of
acupuncture therapy for symptomatic
diabetic peripheral neuropathy
compared with anti-convulsants,
opioids or tricyclic antidepressants?

PICO SEARCHING
STRATEGIES
MeSH
Population group: symptomatic
Boolean diabetic peripheral neuropathy.
Intervention: acupuncture.
Comparison: pharmacological
agents (anti-convulsants, opioids or
tricyclic anti-depressants).

Outcomes: reduction in
pain/adverse side effects

To capture the presence of sensory
peripheral neuropathy / sensory

neuropathy and diabetic neuropathy.
Diabetes
Diabetic
Neuropathies
Acupuncture
Acupuncture Therapy
Complementary Therapy

OR and AND to increase result
NOT to in restrict result

AND have been used to
capture the presence of
diabetic and neuropathy

Search terms

Include Truncation (symbol=$)
Diabet$ (diabetes, diabetic)
Neuropath$ (neuropathy, neuropathic)
Included ‘Adj’ : must appear next to one another
Painful adj. neuropathy
Addition of ‘.tw’ : to detect words located within

the article.



Full search list
Painful adj neuropath$.tw
Diabet$ neuropath$
Alternative therap$
Anti adj convulsants
Tricyclic adj anti adj depressants
Drug adj therap$

Search limitation / expansion

To limit and expand the reference
LIMITATION

Use of Boolean logical ‘AND’ and ‘NOT’, for
example peripheral and neuropathy, will ensure

both search terms appear in the article.
Limit to Englis
h language only

Use of subheading:
therapy could be used in
this instance as the question relates to a
therapy
EXPANSION

Use of ‘OR’ eg. anti-convulsants ‘or’ tricyclic
antidepressants.
Use of ‘No Limits

searching
is an art
that can
be
cultivated
and
practiced

AROMATARIS & RIITANO, 2014

THYAONUK