Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Nausea
RCT 4-armed trial	593 women with nausea and vomiting in early pregnancy In review	Improvement in nausea 1 week 13/135 (10%) with weekly traditional acupuncture for 4 weeks 4/127 (3%) with no acupuncture for 4 weeks	RR 0.93 for traditional acupuncture v no acupuncture 95% CI 0.88 to 0.99 See further information on studies for details on possible placebo effect	Small effect size	traditional acupuncture
RCT 4-armed trial	593 women with nausea and vomiting in early pregnancy In review	Improvement in nausea 2 weeks with weekly PC6 acupuncture for 4 weeks with no acupuncture for 4 weeks Absolute results not reported	P <0.05 for PC6 acupuncture v no acupuncture See further information on studies for details on possible placebo effect	Effect size not calculated	PC6 acupuncture
RCT	55 women, 6 to 10 weeks' gestation In review	Proportion of women who reported nausea with multisite acupuncture with sham acupuncture	P = 0.9		Not significant
Vomiting
RCT 4-armed trial	593 women with nausea and vomiting in early pregnancy In review	Dry retching with weekly PC6 acupuncture for 4 weeks with no acupuncture for 4 weeks	P <0.001 for PC6 acupuncture v no acupuncture See further information on studies for details on possible placebo effect	Effect size not calculated	PC6 acupuncture