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tors to be addressed in public health education. Determination of the risk factors associated with prolonged nausea and vomiting during pregnancy (NVP) helps to develop prevention strategies. However, there is a lack of studies regarding risk factors of prolonged NVP. Thus, the potential risk factors of prolonged moderate and severe NVP were examined. This is a retrospective study among pregnant women in South of China. The Pregnancy-Unique Quantification of Emesis (PUQE) scale was used to evaluate NVP. Onset before 12 weeks and pers