It is very uncertain whether ondansetron changes days of hospital admission compared with promethazine (very low certainty).
Ondansetron may leads to lower intervention side effect: sedation compared with promethazine (low certainty).
Corticosteroids may leads to higher severe nausea 48 hours compared with promethazine (low certainty).
It is very uncertain whether corticosteroids changes severe nausea 17th day compared with promethazine (very low certainty).
It is very uncertain whether corticosteroids changes episodes of vomiting 48 hours compared with promethazine (very low certainty).
Acupuncture showed no clear difference in stillbirth and neonatal death compared with placebo (low certainty).
Corticosteroids showed no clear difference in intervention side effects: drowsiness 48hrs and 3‐10 days compared with promethazine (low certainty).
Corticosteroids showed no clear difference in stillbirth and neonatal death compared with promethazine (low certainty).
It is very uncertain whether corticosteroids changes spontaneous abortion compared with placebo (very low certainty).
It is very uncertain whether corticosteroids changes stillbirth and neonatal death compared with placebo (very low certainty).
It is very uncertain whether corticosteroids changes congenital abnormalities compared with placebo (very low certainty).
It is very uncertain whether corticosteroids changes intervention side effects compared with placebo (very low certainty).
The review found no eligible studies for this question.
The review found no eligible studies for this question.
It is very uncertain whether acupuncture changes reduction or cessation in nausea compared with metoclopramide (very low certainty).
It is very uncertain whether acupuncture changes reduction or cessation in vomiting compared with metoclopramide (very low certainty).
It is very uncertain whether summary of findings ‐ Nipple stimulation (suckling) changes maternal death compared with no treatment (comparison 1) (very low certainty).
Summary of findings ‐ Nipple stimulation (suckling) showed no clear difference in frequency of PPH ≥ 500 mL compared with no treatment (comparison 1) (moderate certainty).