Nutrition Unit, EA2694, UDSL, University of Lille Nord de France, Lille University Medical Center, F-59000 Lille, France.
Appetite. 2012 Apr;58(2):703-9. doi: 10.1016/j.appet.2011.11.031. Epub 2011 Dec 6.
Although the prevalence of obesity is higher in low socioeconomic position (SEP), the relationship between SEP and body mass index (BMI) differs according to gender. The purpose of this study is to investigate the relationships between BMI and SEP according to gender and explore the weight-related behaviors. In a cross-sectional survey, 1646 French adults were weighed and answered a questionnaire about eating behavior (DEBQ), SEP markers, ideal weight perception, physical activity and smoking. Our study showed that BMI was inversely correlated with SEP score in women only, independently of other BMI-associated factors (age, restrained eating, smoking status, TV viewing and physical activity). The SEP gradient was the same in both genders for some weight-related behaviors, such as restrained eating, physical activity and TV viewing, but differs for others, such as smoking and weight consciousness. There was an interaction between the SEP score and the actual BMI on the ideal BMI in women only, thus the difference in ideal body weight according to SEP is mainly due to difference in obese women. Our study concluded that gender differences in the relationship between BMI and SEP could be mainly due to the subjects' perception of weight appropriateness and their weight-related behaviors.
尽管在低社会经济地位（SEP）中肥胖的患病率更高，但 SEP 和体重指数（BMI）之间的关系因性别而异。本研究的目的是根据性别调查 BMI 和 SEP 之间的关系，并探讨与体重相关的行为。在一项横断面调查中，对 1646 名法国成年人进行了称重，并回答了关于饮食行为（DEBQ）、SEP 标志物、理想体重感知、体力活动和吸烟的问卷。我们的研究表明，只有女性的 BMI 与 SEP 评分呈负相关，而与其他 BMI 相关因素（年龄、节食、吸烟状况、看电视和体力活动）无关。在一些与体重相关的行为（如节食、体力活动和看电视）中，性别之间的 SEP 梯度相同，但在其他行为（如吸烟和体重意识）中则不同。仅在女性中，SEP 评分和实际 BMI 之间存在对理想 BMI 的交互作用，因此，根据 SEP 对理想体重的差异主要归因于肥胖女性的差异。我们的研究得出结论，BMI 和 SEP 之间的关系因性别而异，这可能主要归因于研究对象对体重适当性的感知及其与体重相关的行为。
