Project Methodology 5
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Project Methodology 5 |
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EXAMPLES OF SEARCH STRATEGIES USED IN THE PROJECT
SEARCH FILTERS FOR MEDLINE (OVID)
GUIDELINES
Developed by the
Evidence Based Informatics Project at McMaster University, Canada
01
guideline.pt.
02 practice guideline.pt.
03 exp guidelines/
04 health planning guidelines/
05 or/1-4
RANDOMISED CONTROLLED TRIALS
from the
Evidence Based Informatics Project at McMaster University and a discussion with
Sam Vincent (Clinical Evidence, London:BMA).
NB The Cochrane Library Controlled Trials Register now includes all the
controlled trials in Medline plus many other trials, and they are currently
adding trials from Embase.
Set
Search
---------------------------------------------------------------------------
01
random:.tw,sh,pt. or placebo:.tw,sh.
02 (clinical trial or controlled clinical trial).pt.
03 ((single or doubl: or tripl: or treb:) and (blind: or mask:)).tw,ab
04 or/1-3
From
Boynton J et al. Identifying systematic reviews in Medline. Developing
an objective approach to search strategy design. Journal of Information
Science 1998; 24(3): 137-157
Strategy sensitivity = 98%, precision=20%
01
(meta or synthesis or literature).ab
02 (randomized or trials or controlled).hw
03 (published or extraction or search or medline or selection).ab
04 meta-analysis.pt
05
(sources or trials or
review).ab
06 (articles or reviewed or english or language).ab
07
or/1-6
|
/ = subject heading ab = word contained in abstract hw = word contained in title, abstract or subject heading pt=publication type sh = word contained in subject heading tw = word contained in title or abstract |
SYSTEMATIC
REVIEWS AND/OR META-ANALYSES AND OTHER STUDIES – FILTER 2
A more specific, but less
sensitive, filter from the Evidence Based Informatics Project at McMaster
University.
Set
Search
---------------------------------------------------------------------------
01 meta-analysis.pt,sh.
02 (meta-anal: or metaanal:).tw.
03 (quantitativ: review: or quantitativ: overview:).tw.
04 (systematic: review: or systematic: overview:).tw.
05 (methodologic: review: or methodologic: overview:).tw.
06 (integrative research review: or research integration:).tw.
07 quantitativ:
synthes:.tw.
08 or/1-7 ‘Quick’ search for systematic
reviews/meta-analyses
09 (medline or medlars).tw,sh. or embase.tw.
10 (scisearch or psychinfo or psycinfo).tw.
11 (psychlit or psyclit).tw.
12 (hand search: or
manual search:).tw.
13 (electronic database: or bibliographic database:).tw.
14 (pooling or pooled analys: or mantel haenszel).tw.
15 (peto or der simonian or dersimonian or fixed effect:).tw.
16 or/9-15
17 review.pt,sh. or review:.tw. or overview:.tw.
18 16 and 17
19 9 or 18
Most systematic reviews
20
random:.tw,sh,pt. or placebo:.tw,sh.
21 (clinical trial or controlled clinical trial).pt.
22 (single or doubl: or tripl: or treb:) and (blind: or mask:)
23
or/20-22
24
19 and
23 Systematic reviews/meta-analyses
of therapies
Search
Filter to be added to the Systematic Reviews of Therapies Filter above to look
for Observational Studies (Type IV evidence)
(under development for the
Health Evidence Bulletins - Wales project )
024 =
systematic reviews of therapies filter (as above)
025 comparative study.sh
026 exp evaluation studies/
027 follow up studies.sh
028 prospective studies.sh
029 (single group pre-post or cohort or time series or case-control:).tw
030 or/25-29
031 30 not (19 or 23) Observational studies
SEARCH FILTERS FOR EMBASE (OVID Internet)
RANDOMISED CONTROLLED TRIALS
Developed for use in the Health Evidence Bulletins – Wales from the McMaster Medline strategy and as a result of discussion with Sam Vincent (Clinical Evidence, London: BMA, NB The NHS Centre for Reviews and Dissemination is currently developing strategies for use with Embase)
1.
exp Randomized
Controlled Trial/
2.
randomi?ed controlled
trial.mp
3.
(random: or placebo: or
double-blind:).mp
4.
or/1-3
5.
controlled clinical
trial.mp
6.
4 and 5
SYSTEMATIC REVIEWS AND/OR META-ANALYSES
Developed for use in the Health Evidence Bulletins – Wales from the McMaster Medline strategy
1.
exp meta analysis/
2.
meta-anal:.mp
3.
metaanal:.mp
4.
quantitativ: review :.mp
5.
quantitativ: overview:.mp
6.
systematic: review:.mp
7.
systematic: overview:.mp
8.
methodologic: review:.mp
9.
methodologic:
overview:.mp
10.
integrative research
review:.mp
11.
research integration:.mp
12.
quantitativ: synthes:.mp
13.
(medline or medlars or
embase).mp
14.
hand search:.mp
15.
manual search:.mp
16.
(pooling or pooled
analy:).mp
17.
mantel haenszel.mp
18.
(peto or der simonian or
dersimonian or fixed effect:).mp
19.
(scisearch or psychinfo
or psycinfo or psychlit or psyclit).mp
20.
(electronic database: or
bibliographic database:).mp
21.
or/1-20
SYSTEMATIC REVIEWS AND/OR META ANALYSES
If the randomised controlled trials filter is added to the end of the systematic reviews filter as lines 22-26 and lines 21 and 26 are combined then: 027 21 and 26 = systematic reviews of therapies
SEARCH FILTER FOR CINAHL (OVID)
SYSTEMATIC REVIEWS AND/OR META-ANALYSES
Developed by the NHS Centre for Reviews and Dissemination. This search has a high recall but a low precision. The NHS CRD plan to develop the strategy into a tiered approach with the most precise search terms listed first.
01 meta analysis/
02 meta-analysis research/
03 metaanaly:.tw.
04 meta-analy:.tw.
05 cochrane:.tw.
06 nursing interventions.pt.
07 (review: or overview:).ti.
08 literature review/
09 literature searching/
10 computerized literature searching/
11 synthes:.tw. adj3 (literature: or research: or studies or data).tw.
12 (medline or medlars or embase or scisearch or psycinfo or psychinfo or
psyclit or psychlit).tw,sh.
13 pooled analy:.tw.
14 ((data adj2 pool:) and studies).tw.
15 ((hand or manual: or database: or data base: or computer:) adj2
search:).tw.
16 reference databases/
17 ((electronic: or bibliographic:) adj2 (database: or data base:)).tw.
18 review.pt.
19 (review: or overview:).ab.
20 (systematic: or methodologic: or quantitativ: or research: or
literature: or studies or trial: or effective:).ab.
21 18 and 20
22 19 adj10 20
23 or/1-17,21,22
24 editorial.pt.
25 letter.pt.
26 case study.pt.
27 record review/
28 peer review/
29 (retrospective: adj2 review:).tw.
30 (case: adj2 review:).tw.
31 (record: adj2 review:).tw.
32 (patient: adj2 review:).tw.
33 (patient: adj2 chart:).tw.
34 (peer adj2 review:).tw.
35 (chart: adj2 review:).tw.
36 (case: adj2 report:).tw.
37 exp case control studies/
38 exp prospective studies/
39 case studies/
40 animal studies/
41 (rat:or mouse or mice or hamster: or animal: or dog: or cat: or
rabbit: or bovine or sheep).tw.
42 or/24-41
43 42 not (42 and 23)
44 23 not 43 = SYSTEMATIC REVIEWS AND/OR META ANALYSES
SEARCH FILTER FOR PSYCLIT/CLINPSYC/PSYCINFO
1
meta analysis.sh
2
meta-anal:.tw
3
metaanal:.tw
4
meta analysis.id
5
(systematic: and (review: or overview)).tw
6
(critical: and apprais:).tw
7
(critical: and review:).tw
8
or/1-7
9
literature review.sh
10
literature review.id
11
9 or 10
12
8 or 11
13
case report.sh
14
8 not 13
15
12 not 13
16
limit 14 to human SYSTEMATIC REVIEWS AND/OR
META ANALYSES
17
limit 15 to human Systematic
reviews/meta-analyses and some other reviews
18
treatment effectiveness evaluation.sh
19
(random: and trial:).tw
20
(random: and allocat:).tw
21
double blind.tw
22
single blind.tw
23
or/18-22
24
limit 23 to human
25
clinical trial.id
26
clinical trial:.tw
27
(singl: or doubl: or trebl: or tripl:) adj5 blind.tw
28
(clin: adj25 trial:).ti,ab
29
placebo:.tw
30
placebo:.id
31
placebo:.ti,ab
32
random:.ti,ab
33
methodology.sh
34
experimental design.sh
35
experimentation.sh
36
experimental methods.sh
37
or/25-36
38
limit 38 to human RANDOMISED CONTROLLED
TRIALS
39
effectiveness.id
40
followup studies.sh
41
posttreatment followup.sh
42
treatment outcomes.sh
43
longitudinal studies.sh
44
(control: or prospectiv: or volunteer:).ti
45
comparative study.tw
46
or/39-45
47
limit 46 to
human
CONTROLLED PROSPECTIVE AND OTHER STUDIES