[Postpartum weight retention in Beijing, Suzhou and Guangzhou women and its associated factors].

To investigate the prevalence of postpartum weight retention (PPWR) in urban Chinese women, and to explore its associated factors.Cluster sampling methods were used to select a total of 6 hospitals in Beijing, Guangzhou and Suzhou. A total of 578 women in the 0 - 1 months, 1 - 2 months, 2 - 4 months and 4 - 8 months postpartum participated in this study. Anthropometric indicators of height and weight were measured for each participant. Questionnaire was used to obtain the sociodemographic characteristics. Maternal information of pre-pregnancy weight and gestational weight gain were obtained by medical records.The pre-pregnancy BMI of participants was (20. 8 ± 2. 7), while postpartum BMI was (23. 4 ± 3. 2). PPWR decreased over time, however, 53. 4% of women had PPWR over 5kg at the 4 - 8 months postpartum. 32. 6% of women were overweight or obese at 4 - 8 months postpartum. Women with PPWR >0kg at 4 - 8 months postpartum had a higher gestational weight gain ((16.5 ± 5.5) kg) compared to those with PPWR≤0 kg ((13.0 ±4.7) kg). Women with higher education experience had a higher proportion of weight retention over 0 kg at 4 - 8 month postpartum.PPWR is a serious health and nutritional problem in Chinese women, where excess in gestational weight gain is associated with PPWR. To improve the health and lifestyle of perinatal women, a comprehensive health education and health intervention should be explored.