University of Tasmania, Hobart, Tasmania, Australia.
University of Bremen, Bremen, Germany.
Appl Psychol Health Well Being. 2019 Nov;11(3):382-406. doi: 10.1111/aphw.12154. Epub 2019 Mar 18.
Dietary behaviours are strongly patterned by socioeconomic status (SES). However, the role of SES in the self-regulation of health promoting dietary behaviours is not fully understood. This systematic review with meta-analysis investigated whether four individual-level measures of SES (income, occupation, education, and ethnicity) moderate the relationships between Theory of Planned Behaviour (TPB) variables and different health promoting dietary behaviours in adults.
A systematic literature search identified 106 studies from 77 articles providing information on TPB variables, SES, and health promoting dietary behaviours-choosing health promoting foods and restricting health compromising foods. Random-effects meta-analyses were conducted to generate pooled correlations corrected for sampling and measurement error, and meta-regression was used to test moderating effects of study-level SES.
All TPB variables were significantly and positively associated with both health promoting dietary behaviours, with intention having the strongest correlation with behaviour. However, none of the relationships between TPB variables and health promoting dietary behaviours were significantly moderated by study-level SES.
Results suggest robust associations between TPB predictors and healthy dietary behaviour that are not patterned by individual-level SES measures.
饮食行为受社会经济地位（SES）的强烈影响。然而，SES 在促进健康的饮食行为的自我调节中的作用尚未完全了解。本系统评价和荟萃分析研究了四个个体层面 SES 指标（收入、职业、教育和种族）是否调节了理论计划行为（TPB）变量与成年人不同的促进健康的饮食行为之间的关系。
系统文献检索从 77 篇文章中确定了 106 项研究，这些文章提供了有关 TPB 变量、SES 和促进健康的饮食行为的信息——选择促进健康的食物和限制损害健康的食物。进行随机效应荟萃分析以生成校正抽样和测量误差的合并相关系数，并使用元回归检验研究水平 SES 的调节作用。
所有 TPB 变量均与促进健康的饮食行为呈显著正相关，其中意图与行为的相关性最强。然而，TPB 变量与促进健康的饮食行为之间的关系均不受研究水平 SES 的显著调节。
结果表明，TPB 预测因子与健康饮食行为之间存在稳健的关联，不受个体水平 SES 指标的影响。
