No.Search terms
1exp randomized controlled trial/
2(random$ or placebo$).ti,ab.
3((singl$ or doubl$ or trebl$ or tripl$) adj25 (blind$ or mask$)).ti,ab.
4(clin$ adj25 trial$).ti,ab.
5exp comparative study/
6exp evaluation/
7exp follow up/
8exp prospective study/
9(control$ or prospective$ or volunteer$).ti,ab.
10or/1–9
11exp human/
1210 and 11

From: Appendix C2, Search strategies

Cover of Transient Loss of Consciousness (‘Blackouts’) Management in Adults and Young People
Transient Loss of Consciousness (‘Blackouts’) Management in Adults and Young People [Internet].
NICE Clinical Guidelines, No. 109.
National Clinical Guideline Centre for Acute and Chronic Conditions (UK).
Copyright © National Clinical Guideline Centre for Acute and Chronic Conditions, 2010.

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