Friel Sharon, Newell John, Kelleher Cecily
Department of Mathematics, National University of Ireland, Galway, Republic of Ireland.
Public Health Nutr. 2005 Apr;8(2):159-69. doi: 10.1079/phn2004670.
To identify, using the novel application of multivariate classification trees, the socio-economic, sociodemographic and health-related lifestyle behaviour profile of adults who comply with the recommended 4 or more servings per day of fruit and vegetables.
Cross-sectional 1998 Survey of Lifestyle, Attitudes and Nutrition.
Community-dwelling adults aged 18 years and over on the Republic of Ireland electoral register.
Six thousand five hundred and thirty-nine (response rate 62%) adults responded to a self-administered postal questionnaire, including a semi-quantitative food-frequency questionnaire.
The most important determining factor of compliance with the fruit and vegetable dietary recommendations was gender. A complex constellation of sociodemographic and socio-economic factors emerged for males whereas the important predictors of 4 or more servings of fruit and vegetable consumption among females were strongly socio-economic in nature. A separate algorithm was run to investigate the importance of health-related lifestyle and other dietary factors on compliance with the fruit and vegetable recommendations. Following an initial split on compliance with dairy recommendations, a combination of non-dietary behaviours showed a consistent pattern of healthier options more likely to lead to compliance with fruit and vegetable recommendations. There did, however, appear to be a compensatory element between the variables, particularly around smoking, suggesting the non-existence of an exclusive lifestyle for health risk.
Material and structural influences matter very much for females in respect to compliance with fruit and vegetable recommendations. For males, while these factors are important they appear to be mediated through other more socially contextual-type factors. Recognition of the role that each of these factors plays in influencing dietary habits of men and women has implications for the manner in which dietary strategies and policies are developed and implemented.
运用多元分类树的新应用，确定每天食用4份或更多份水果和蔬菜的成年人的社会经济、社会人口统计学及与健康相关的生活方式行为特征。
1998年生活方式、态度与营养横断面调查。
爱尔兰共和国选民登记册上年龄在18岁及以上的社区居住成年人。
6539名成年人（回复率62%）回复了一份自我填写的邮政问卷，其中包括一份半定量食物频率问卷。
遵守水果和蔬菜饮食建议的最重要决定因素是性别。男性呈现出一系列复杂的社会人口统计学和社会经济因素，而女性每天食用4份或更多份水果和蔬菜的重要预测因素在本质上主要是社会经济因素。运行了一个单独的算法来研究与健康相关的生活方式和其他饮食因素对遵守水果和蔬菜建议的重要性。在最初根据是否遵守乳制品建议进行划分后，一系列非饮食行为呈现出一种一致的模式，即更健康的选择更有可能导致遵守水果和蔬菜建议。然而，这些变量之间似乎存在补偿因素，尤其是在吸烟方面，这表明不存在一种专门针对健康风险的生活方式。
在遵守水果和蔬菜建议方面，物质和结构影响对女性非常重要。对男性而言，虽然这些因素很重要，但它们似乎是通过其他更具社会背景类型的因素来介导的。认识到这些因素在影响男性和女性饮食习惯中所起的作用，对制定和实施饮食策略及政策的方式具有启示意义。
