Table 3. Reproducibility and instrument correlation analysis on the Health-Related Quality of Life Questionnaire for Nausea and Vomiting of Pregnancy_Portuguese.

Domains of the World Health Organization Quality of Life-bref questionnaire	Health-Related Quality of Life Questionnaire for Nausea and Vomiting of Pregnancy_Portuguese (P-value)	Correlation coefficient (R)
Overall perception of quality of life	< 0.01^a ^*	-0.55
Overall perception of general health	< 0.01^a ^*	-0.55
Physical health	< 0.01^a ^*	-0.80
Psychological	< 0.01^a ^*	-0.68
Social relationships	< 0.01^a ^*	-0.53
Environment	0.01^b ^*	-0.42

Spearman correlation test

Pearson correlation test

P-value < 0.05.