青少年果蔬摄入行为与心理、社会因素结构模型  

Association of fruit and vegetable intake behaviors with psychological and social factors among adolescents: an structural equation model analysis

作　　者：许鸣[1] 骆湘香 谢文倩[1] 朱茜如 顾昉[2] 胡建江 俞慧芳[4] 凌洁[4] 许亮文[1] XU Ming;LUO Xiang-xiang;XIE Wen-qian;et al(Department of Preventive MedicineMedical College, Hangzhou Normal University, Hangzhou, Zhejiang Province 310036, China)

机构地区：[1]杭州师范大学医学院预防医学系浙江省重点科技创新团队(2011R50021) [2]浙江省疾病预防控制中心 [3]杭州市滨江区疾病预防控制中心 [4]嘉兴市疾病预防控制中心

出　　处：《中国公共卫生》2018年第4期540-544,共5页Chinese Journal of Public Health

基　　金：国家自然科学基金(71273079);教育部人文社会科学研究规划基金(11YJA880128)

摘　　要：目的构建青少年果蔬摄入行为与心理、社会因素的关系模型,探索心理、社会因素对青少年果蔬摄入行为阶段的影响机制与程度。方法 2015年5月,利用分层整群抽样方法在浙江省杭州市和嘉兴市对1 858名中学生进行现场问卷调查,获取学生果蔬摄入行为阶段、相关心理因素、社会因素信息,用结构方程模型构建各潜变量与行为阶段之间的关系模型。结果模型拟合指标经反复校正后均达到较理想的水平(CFI=0.941,RMSEA=0.032),校正后模型显示朋友支持与正向态度对行为阶段只有间接效应,效应值为0.070、0.166;负向态度与自我效能对行为阶段只有直接效应,效应值为–0.096、0.252;家庭支持、改变策略对行为阶段既有直接效应,又有间接效应,总效应值分别为0.134、0.161。心理因素比社会因素对行为阶段的影响力更大,以自我效能为著。结论基于SEM方法,心理、社会因素对青少年果蔬摄入行为阶段的作用得到结构方程模型的有力支持。Objective To construct a structural equation model （SEM） for describing the correlation of fruit and vegetable intake behaviors with psychological and social factors among adolescents and to explore the extent and mechanism of psychological and social influences on the behaviors.Methods We conducted a questionnaire survey among 1 858 students （mean age=15.06 ±4.39 years） selected in two high schools in Hangzhou and Jiaxing city of Zhejiang province with stratified random cluster sampling in May 2015. Information on fruit and vegetable intake behaviors and related psychological and social factors were collected among the students. SEM was constructed to analyze the influences of potential variables on the stage of fruit and vegetable intake behavior.Results The constructed model exhibited a good fit to the data collected, with a comparative fit index （CFI） of 0.941 and a root mean square error of approximation （RMSEA） of 0.032. The corrected model demonstrated that friend support and positive attitude only affected the stage of fruit and vegetable intake behavior indirectly, with the effect value of 0.070 and 0.166; in contrast, negative attitude and self-efficacy only affected the stage of fruit and vegetable intake behavior directly, with the effect value of - 0.096 and 0.252; while, family support and change in strategy affected the stage of fruit and vegetable intake behavior both directly and indirectly, with the total effect value of 0.134 and 0.161. The influence of psychological factors on the stage of fruit and vegetable intake behavior was much greater than that of social factors.Conclusion Structural equation model can be well used to assess the influences of psychological and social factors on fruit and vegetable intake behaviors among adolescents quantitatively.

关 键 词：青少年 果蔬摄入行为 心理因素 社会因素 结构方程模型 

分 类 号：R181.37[医药卫生—流行病学]