Why do parents education level and income affect the amount of fruits and vegetables adolescents eat
Why do parents education level and income affect the amount of fruits and vegetables adolescents eat
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DOI：
10.1093/eurpub/ckn081
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发表时间：
2008-12-01
影响因子：
4.4
通讯作者：
Brug, Johannes
中科院分区：
文献类型：
--
作者：
Bere, Elling;van Lenthe, Frank;Brug, Johannes
背景：在饮食行为方面存在巨大的社会经济差异。本研究的目的是纵向探讨青少年水果和蔬菜（FV）摄入量的社会经济差异，并评估中介的差异。研究方法：一项纵向研究，其中包括896名青少年从20个随机选择的小学在挪威两个县（响应率84）。于2002年5月（平均年龄12.5岁）和2005年5月再次进行问卷调查。通过四个食物频率问题（次/周）测量FV摄入量。社会经济地位是根据父母对自己的教育水平和家庭收入的报告（两者都是二分的）。采用重复混合模型分析数据。结果：青少年FV摄入量与家庭收入有显著差异（1.1次/周，P0.05）.发现父母教育与时间（调查）之间存在交互作用（P 0.04），2005年的教育差异（2.4次/周，P 0.001）大于2002年（1.3次/周，P 0.03）。在多重中介分析中，共解释了92（2002年）和60（2005年）的教育差距和89的收入差距。对于这两个，青少年报告的FV在家里的可访问性解释了大部分的差异。结论：感知的可及性似乎是青少年FV摄入量和他们的父母的教育水平和收入之间的关系最强的调解人，因此可能是未来的干预措施，旨在减少青少年FV摄入量的社会经济差异的一个重要目标。
Background: There are large socioeconomic disparities in food behaviours. The objective of the present study is to longitudinally explore socioeconomic disparities in adolescents fruit and vegetable (FV) intake and to assess mediators of the disparity. Methods: A longitudinal study containing 896 adolescents from 20 randomly selected elementary schools within two Norwegian counties (response rate 84). Questionnaires were administered in May 2002 (mean age 12.5 years) and again in May 2005. FV intake was measured by four food frequency questions (times/week). Socioeconomic status was based on parents reports of their own educational level and family income (both dichotomized). Data were analysed with repeated mixed models. Results: A disparity in adolescents FV intake was observed with family income (1.1 times/week, P 0.05). An interaction between parental education and time (survey) was found for parental education (P 0.04) and the educational disparity was greater in 2005 (2.4 times/week, P 0.001) than in 2002 (1.3 times/week, P 0.03). In multiple mediation analyses, a total of 92 (2002) and 60 (2005) of the educational disparity and 89 of the income disparity, were explained. For both, the adolescents reports of the accessibility of FV at home explained most of the disparity. Conclusions: Perceived accessibility appears to be the strongest mediator of the relationship between adolescents FV intake and their parents educational level and income and may therefore be an important target for future interventions that aim to reduce socioeconomic disparities in adolescents FV intake.