University of Hawai'i Cancer Center, Prevention and Control Program, Honolulu, Hawaii, USA.
Obesity (Silver Spring). 2011 Dec;19(12):2336-44. doi: 10.1038/oby.2011.96. Epub 2011 May 5.
This study evaluates the 16-item, four-factor Weight-Related Eating Questionnaire (WREQ), which assesses theory-based aspects of eating behavior, across diverse, nonclinical subgroups. A total of 621 men and women aged 18-81 years (34.3 ± 16.4) with a mean BMI of 25.7 ± 6.1 kg/m(2) (range 15.5-74.1 kg/m(2)) were recruited from general education classes at the University of Hawai'i, Manoa and an online survey panel of Hawai'i residents to complete a web-based survey. Participants were predominantly white (23%), Asian/Asian-mix (42%), or Native Hawaiian/Pacific Islander (18%). The WREQ's factor structure was successfully replicated by confirmatory factor analysis (CFA) for the entire sample and by weight status, gender, age, and race with strong internal consistency. Four-week test-retest reliability (n = 31) for the subscales was excellent with interclass correlations of 0.849-0.932. Tests of population invariance confirmed the generalizability of the WREQ across all subgroups having provided no evidence that the factor structure, factor loadings, or indicator intercepts varied significantly between the groups. Multivariate regression analyses showed that emotional eating was independently associated with BMI (β = 0.272, P < 0.001) as well as moderate- and long-term weight change rates (weight gain) in young adults (β = 0.152, P = 0.042) and adults (β = 0.217, P = 0.001). Compensatory restraint was negatively associated with weight gain in adults (β = -0.133, P = 0.039). Routine restraint and emotional eating were highest among dieters. All associations remained significant after accounting for gender, age, and race. The hypothesized WREQ measurement model demonstrated very good construct validity, confirming the unbiased generalizability of the WREQ measure across sex, age, race, and BMI subgroups, and excellent criterion-related validity with respect to current BMI, weight change, and weight control status.
本研究评估了 16 项、四因素体重相关进食问卷（WREQ），该问卷评估了基于理论的进食行为方面，涵盖了不同的非临床亚组。共有 621 名年龄在 18-81 岁（34.3 ± 16.4）、平均 BMI 为 25.7 ± 6.1kg/m²（范围为 15.5-74.1kg/m²）的男女在夏威夷大学马诺阿分校的普通教育课程和夏威夷居民的在线调查小组中招募，以完成基于网络的调查。参与者主要为白人（23%）、亚洲/亚洲混血（42%）或夏威夷原住民/太平洋岛民（18%）。整个样本以及按体重状况、性别、年龄和种族进行的验证性因子分析（CFA）成功复制了 WREQ 的因子结构，具有很强的内部一致性。四个星期的重测信度（n = 31）对于分量表非常好，组内相关系数为 0.849-0.932。人口不变性检验证实了 WREQ 在所有亚组中的可推广性，没有证据表明因子结构、因子负荷或指标截距在组间有显著差异。多元回归分析表明，情绪性进食与 BMI 独立相关（β=0.272，P <0.001），以及年轻人（β=0.152，P=0.042）和成年人（β=0.217，P=0.001）的中短期体重变化率（体重增加）相关。补偿性克制与成年人的体重增加呈负相关（β=-0.133，P=0.039）。常规克制和情绪性进食在节食者中最高。在考虑性别、年龄和种族后，所有关联仍然显著。假设的 WREQ 测量模型显示出非常好的结构有效性，证实了 WREQ 测量在性别、年龄、种族和 BMI 亚组中无偏的可推广性，以及与当前 BMI、体重变化和体重控制状况的极好的标准相关有效性。
