Jia Yin, Jiang Haili, Yu Yang, Fu Yuhui, Li Yue, Wang Huili
School of General Practice and Continuing Education Capital Medical University Beijing China.
Department of Obstetrics, Beijing Obstetrics and Gynecology Hospital Capital Medical University, Beijing Maternal and Child Health Care Hospital Beijing China.
Food Sci Nutr. 2025 May 27;13(6):e70289. doi: 10.1002/fsn3.70289. eCollection 2025 Jun.
To examine the optimal proportion of gestational weight gain (GWG) for Chinese singleton women based on Chinese body mass index (BMI) categories. A retrospective cohort study with 16,977 singleton pregnant women was conducted. Among the included subjects, 2/3 of whom were randomly imported into the training set for calculating the optimal proportion of GWG ranges, and another third of the women were imported into the validation set to evaluate the GWG ranges calculated with different methods. The detection rate of adverse outcomes of pregnant women with appropriate weight gain proportion under the above three methods was evaluated by paired chi-square test, using the data of pregnant women in the validation database. According to the percentile method, the suitable proportion of GWG of pregnant women with underweight, normal weight, overweight, or obesity before pregnancy was 25.8%-37.8%, 20.3%-30.8%, 13.0%-23.1%, respectively. According to the Odds ratio method, the suitable proportion of GWG for pregnant women with different BMI categories was 24%-34%, 14%-18%, and 4%-14%, respectively. According to the combined risk curve method, the suitable proportion of GWG for pregnant women with different BMI categories was 27.9%-32.5%, 11.5%-16.8%, and -2.1%-5.5%, respectively. When the proportion of GWG ranges from 27.9%-32.5%, 11.5%-16.8%, and -2.1%-5.5% for different BMI categories, the pregnant women with appropriate weight gain proportions have the lowest detection rate of adverse maternal and infant outcomes. The GWG proportion serves as a valuable clinical indicator for enabling personalized weight management strategies and tailored nutritional guidance during pregnancy. The recommended proportion of GWG in this study for underweight, normal, overweight, and obese pregnant women was 27.9%-32.5%, 11.5%-16.8%, and -2.1%-5.5%, respectively.
基于中国身体质量指数（BMI）类别，研究中国单胎妊娠女性的最佳孕期体重增加（GWG）比例。对16977名单胎妊娠女性进行了一项回顾性队列研究。在纳入的研究对象中，三分之二被随机纳入训练集以计算GWG范围的最佳比例，另外三分之一的女性被纳入验证集，以评估用不同方法计算出的GWG范围。利用验证数据库中孕妇的数据，通过配对卡方检验评估上述三种方法下体重增加比例适宜的孕妇不良结局的检出率。根据百分位数法，孕前体重过轻、体重正常、超重或肥胖的孕妇适宜的GWG比例分别为25.8%-37.8%、20.3%-30.8%、13.0%-23.1%。根据优势比法，不同BMI类别的孕妇适宜的GWG比例分别为24%-34%、14%-18%和4%-14%。根据联合风险曲线法，不同BMI类别的孕妇适宜的GWG比例分别为27.9%-32.5%、11.5%-16.8%和-2.1%-5.5%。当不同BMI类别的GWG比例分别为27.9%-32.5%、11.5%-16.8%和-2.1%-5.5%时，体重增加比例适宜的孕妇母婴不良结局的检出率最低。GWG比例是制定个性化体重管理策略和孕期定制营养指导的重要临床指标。本研究中推荐的体重过轻、正常、超重和肥胖孕妇的GWG比例分别为27.9%-32.5%、11.5%-16.8%和-2.1%-5.5%。
