CFA	confirmatory factor analysis
CFI	comparative fit index
COSMIN	Consensus-based Standards for the selection of health Measurement INstruments.
EFA	exploratory factor analyses
HG	Hyperemesis gravidarum
INV	Rhodes Index of Nausea and Vomiting
KMO	Keiser-Meyer-Olkin index
NVP	nausea and vomiting of pregnancy
NVP-QOL	Health-Related Quality of Life for Nausea and Vomiting during Pregnancy questionnaire
PUQE-24	24-h Pregnancy-Unique Quantification of Emesis and Nausea
QOL	quality of life
RMSEA	root mean square of error approximation
SD	standard deviation