Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Hospital admission/readmission rates
RCT	40 women with intractable hyperemesis gravidarum admitted to intensive care at <16 weeks' gestation	Proportion of women readmitted to the intensive care unit for recurrence of severe persistent vomiting within 2 weeks of initial treatment 0/20 (0%) with intravenous hydrocortisone (300 mg/day) for 1 week 6/20 (30%) with intravenous metoclopramide (10 mg three times daily) for 1 week	P <0.0001	Effect size not calculated	hydrocortisone