Mackenbach Joreintje D, Lakerveld Jeroen, van Oostveen Yavanna, Compernolle Sofie, De Bourdeaudhuij Ilse, Bárdos Helga, Rutter Harry, Glonti Ketevan, Oppert Jean-Michel, Charreire Helene, Brug Johannes, Nijpels Giel
Department of Epidemiology and Biostatistics, EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, the Netherlands.
Department of Movement and Sport Sciences, Ghent University, Gent, Belgium, Ghent, Belgium.
Eur J Public Health. 2017 Apr 1;27(2):218-223. doi: 10.1093/eurpub/ckw157.
Neighbourhood income inequality may contribute to differences in body weight. We explored whether neighbourhood social capital mediated the association of neighbourhood income inequality with individual body mass index (BMI).
A total of 4126 adult participants from 48 neighbourhoods in France, Hungary, the Netherlands and the UK provided information on their levels of income, perceptions of neighbourhood social capital and BMI. Factor analysis of the 13-item social capital scale revealed two social capital constructs: social networks and social cohesion. Neighbourhood income inequality was defined as the ratio of the amount of income earned by the top 20% and the bottom 20% in a given neighbourhood. Two single mediation analyses-using multilevel linear regression analyses-with neighbourhood social networks and neighbourhood social cohesion as possible mediators-were conducted using MacKinnon's product-of-coefficients method, adjusted for age, gender, education and absolute household income.
Higher neighbourhood income inequality was associated with elevated levels of BMI and lower levels of neighbourhood social networks and neighbourhood social cohesion. High levels of neighbourhood social networks were associated with lower BMI. Results stratified by country demonstrate that social networks fully explained the association between income inequality and BMI in France and the Netherlands. Social cohesion was only a significant mediating variable for Dutch participants.
The results suggest that in some European urban regions, neighbourhood social capital plays a large role in the association between neighbourhood income inequality and individual BMI.
社区收入不平等可能导致体重差异。我们探讨了社区社会资本是否介导了社区收入不平等与个体体重指数（BMI）之间的关联。
来自法国、匈牙利、荷兰和英国48个社区的4126名成年参与者提供了他们的收入水平、对社区社会资本的认知以及BMI信息。对13项社会资本量表进行因子分析，揭示了两种社会资本结构：社会网络和社会凝聚力。社区收入不平等定义为给定社区中收入最高的20%和最低的20%所赚取的收入之比。使用MacKinnon系数乘积法进行了两项单中介分析——采用多层线性回归分析——将社区社会网络和社区社会凝聚力作为可能的中介变量，并对年龄、性别、教育程度和家庭绝对收入进行了调整。
较高的社区收入不平等与较高的BMI水平以及较低的社区社会网络和社区社会凝聚力水平相关。高水平的社区社会网络与较低的BMI相关。按国家分层的结果表明，社会网络完全解释了法国和荷兰收入不平等与BMI之间的关联。社会凝聚力仅对荷兰参与者是一个显著的中介变量。
结果表明，在一些欧洲城市地区，社区社会资本在社区收入不平等与个体BMI之间的关联中起着很大作用。
