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Q Is ginger (Zingiber officinale) better than placebo for preventing 24 hour postoperative nausea and vomiting?
METHODS
Data sources:
Medline, International Pharmaceutical Abstracts, CINAHL, Cochrane Central, HealthStar, Current Contents, bibliographies of relevant articles, pharmaceutical companies, authors, and experts in the field.
Study selection and assessment:
published and unpublished randomised controlled trials (RCTs) that compared the antiemetic effects of ⩾1 g of ginger with placebo for preventing postoperative nausea and vomiting and included sufficient data to calculate the incidence of …
Footnotes
For correspondence: Dr N Chaiyakunapruk, School of Pharmaceutical Sciences, Naresuan University, Phitsanulok, Thailand. nui{at}u.washington.edu
Source of funding: Thailand Research Fund.