School of Human Evolution and Social Change, Arizona State University,Tempe, AZ 85287-2402, USA.
Am J Public Health. 2011 Dec;101 Suppl 1(Suppl 1):S295-300. doi: 10.2105/AJPH.2010.300053. Epub 2011 May 9.
We aimed to test the hypothesized role of shared body size norms in the social contagion of body size and obesity.
Using data collected in 2009 from 101 women and 812 of their social ties in Phoenix, Arizona, we assessed the indirect effect of social norms on shared body mass index (BMI) measured in 3 different ways.
We confirmed Christakis and Fowler's basic finding that BMI and obesity do indeed cluster socially, but we found that body size norms accounted for only a small portion of this effect (at most 20%) and only via 1 of the 3 pathways.
If shared social norms play only a minor role in the social contagion of obesity, interventions targeted at changing ideas about appropriate BMIs or body sizes may be less useful than those working more directly with behaviors, for example, by changing eating habits or transforming opportunities for and constraints on dietary intake.
我们旨在检验体型和肥胖的社会传染中体型规范共享这一假设作用。
我们使用了 2009 年在亚利桑那州凤凰城收集的 101 名女性及其 812 名社交关系的数据，以评估社会规范对 3 种不同方式测量的共享体重指数（BMI）的间接影响。
我们证实了 Christakis 和 Fowler 的基本发现，即 BMI 和肥胖确实在社交中聚集，但我们发现体型规范仅解释了这种影响的一小部分（最多 20%），而且仅通过 3 种途径中的 1 种。
如果共享社会规范在肥胖的社会传染中仅起次要作用，那么针对改变关于适当 BMI 或体型的观念的干预措施可能不如那些更直接针对行为的干预措施有用，例如通过改变饮食习惯或改变饮食摄入的机会和限制。
