Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Vomiting
RCT	25 women with severe hyperemesis, mean gestational age of 10.6 weeks for prednisolone and 8.3 weeks for placebo In review	Persistent vomiting 5/12 (42%) with oral prednisolone twice daily for 1 week 7/12 (58%) with placebo for 1 week	RR 0.71 95% CI 0.31 to 1.63 The RCT may have been too small to detect a clinically important effect		Not significant