Efficacy of headache treatments
MEDLINE database search strategy
1randomized controlled trials/
2random allocation/
3double-blind method/
4single-blind method/
5randomized controlled trial.pt.
61 or 2 or 3 or 4 or 5
7animal/
8human/
97 and 8
107 not 9
116 not 10
12clinical trial.pt.
13exp clinical trials/
14(clin$ adj trial$).tw.
15((singl$ or doubl$ or trebl$ or tripl$) adj (blind$ or mask$)).tw.
16placebos/
17placebo$.tw.
18random$.tw
19research design/
2012 or 13 or 14 or 15 or 16 or 17 or 18 or 19
2120 not 10
22comparative-study/
23exp evaluation studies/
24follow-up studies/
25prospective-studies/
26(control$ or prospectiv$ or volunteer$).tw.
2722 or 23 or 24 or 25 or 26
2827 not 10
2921 not 11
3028 not (21 or 11)
31exp headache/
3211 and 31
3329 and 31
3430 and 31

From: Appendix A, MEDLINE search strategy

Cover of Parenteral Drug Treatments for Acute Migraine Headache
Parenteral Drug Treatments for Acute Migraine Headache.
Technical Reviews, No. 2.5.
Gray RN, McCrory DC, Eberlein K, et al.

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