Abstract：
The Weight-Related Eating Questionnaire (WREQ), designed for assessing distinct constructs of dietary restraint and disinhibition-related eating behaviors, has not been validated in pregnancy. This secondary data analysis aimed to evaluate the WREQ\'s psychometrics in a diverse sample of pregnant women from the eMoms randomized controlled trial (N = 1399), randomly split for exploratory (EFA, n = 691) and confirmatory factor analysis (CFA, n = 708). Cronbach\'s alpha and corrected item-total correlation was used to examine internal consistency reliability. Sequential multiple regression analyses were used to assess criterion validity. EFA revealed three factors - dietary restraint, susceptibility to external cues, and emotional eating - accounting for 65.6 % of total variances. Parallel analysis confirmed a combination of two restraint subtypes (routine restraint and compensatory restraint). CFA showed that item 3 for assessing routine restraint had the lowest squared multiple correlation (0.22). The overall Cronbach\'s alpha of 0.87 demonstrated good internal consistency. Dietary restraint was negatively associated with the intake of energy (p = .03) and carbohydrates (p = .02), whereas susceptibility to external cues was positively associated with the intake of energy (p < .001), carbohydrates (p < .001), and total fat (p = .003). Additionally, emotional eating was positively associated with early-pregnancy body mass index (BMI) after adjustment for covariates (p < .001). These findings confirmed the reliability of the WREQ, the construct validity for susceptibility to external cues and emotional eating, and demonstrated its criterion validity regarding nutritional intake in pregnant women.
摘要：
与体重相关的饮食问卷(WREQ)，设计用于评估饮食限制和与抑制相关的饮食行为的不同结构，在怀孕期间尚未验证。此次要数据分析旨在评估来自eMoms随机对照试验（N=1399）的不同孕妇样本中WREQ的心理测量学，随机分为探索性(全民教育，n=691)和验证性因子分析(CFA，n=708）。Cronbach的α和校正的项目总相关性用于检查内部一致性可靠性。使用序贯多元回归分析来评估标准的有效性。EFA揭示了三个因素-饮食限制，对外部线索的敏感性，和情绪饮食-占总方差的65.6%。平行分析证实了两种约束亚型（常规约束和代偿约束）的组合。CFA显示，用于评估常规约束的项目3具有最低的平方多重相关性（0.22）。Cronbach的整体α为0.87，表现出良好的内部一致性。饮食限制与能量（p=0.03）和碳水化合物（p=0.02）的摄入呈负相关，而对外部线索的敏感性与能量的摄入呈正相关（p<.001），碳水化合物（p<.001），和总脂肪（p=0.003）。此外,调整协变量后,情绪饮食与孕早期体重指数(BMI)呈正相关(p<.001).这些发现证实了WREQ的可靠性，对外部线索和情绪饮食的易感性的结构效度，并证明了其关于孕妇营养摄入的标准有效性。
