BARFs	Baxter Retching Faces
CI	Confidence interval
CINV	Chemotherapy-induced nausea and vomiting
EO	Essential oil
GRADEs	Grading of Recommendations, Assessment, Development, and Evaluations
hCG	Human chorionic gonadotropin
MCID	Minimal clinically important difference
MD	Mean difference
NV	Nausea and vomiting
NVP	Nausea and vomiting in pregnancy
PONV	Postoperative nausea and vomiting
PRISMA	Preferred Reporting Items for Systematic Reviews and Meta-Analyses
PUQE	Pregnancy Unique Quantification of Emesis/Nausea
RCT	Randomized controlled trial
SD	Standard deviation
SE	Standard error
SEM	Standard error of the mean
SMD	Standardized mean difference
VAS	Visual analogue scale