Nutrition and Food Science Track, Urban Public Health Program, Hunter College, City University of New York, New York, NY, USA.
J Nutr Educ Behav. 2010 Sep-Oct;42(5):321-7. doi: 10.1016/j.jneb.2009.08.004. Epub 2010 Jul 22.
This paper presents the reliability and validity of a "competing food choice" construct designed to assess whether factors related to consumption of less-healthful food were perceived to be barriers to fruit and vegetable consumption in college freshmen.
Cross-sectional, self-administered survey.
An urban public college with a large, diverse student population.
A convenience sample of 408 college freshmen.
A "competing food choice" construct and fruit and vegetable intake.
Factor analysis, Cronbach α, and correlation coefficients were used to determine the reliability and validity of the construct.
Three factors were produced from the factor analysis of the 11-item competing food choice construct: "competitive food" barriers (Cronbach alpha = 0.73), fruit and vegetable-related "time" barriers (Cronbach alpha = 0.67), and "quality" barriers (Cronbach alpha = 0.64). Construct validity assessments revealed significant inverse correlations between fruit and vegetable consumption and competitive food barriers (r = -0.15, P < .01 current and r = -0.25, P < .01 prior) and time barriers (r = -0.12, P < .05 current and r = -0.10, P < .05 prior).
This "competing food choice" construct demonstrated satisfactory reliability and construct validity among college freshmen.
本文介绍了一种“竞争食物选择”结构的可靠性和有效性，该结构旨在评估与食用不太健康食物相关的因素是否被认为是大学生食用水果和蔬菜的障碍。
横断面、自我管理调查。
一所具有多样化学生群体的城市公立大学。
一个便利样本的 408 名大学新生。
“竞争食物选择”结构和水果和蔬菜摄入量。
使用因子分析、Cronbach α 和相关系数来确定结构的可靠性和有效性。
从 11 项竞争食物选择结构的因子分析中产生了三个因素：“竞争食物”障碍（Cronbach α = 0.73）、水果和蔬菜相关的“时间”障碍（Cronbach α = 0.67）和“质量”障碍（Cronbach α = 0.64）。结构有效性评估显示，水果和蔬菜摄入量与竞争食物障碍（r = -0.15，P <.01 当前和 r = -0.25，P <.01 之前）和时间障碍（r = -0.12，P <.05 当前和 r = -0.10，P <.05 之前）呈显著负相关。
这种“竞争食物选择”结构在大学生中表现出了令人满意的可靠性和结构有效性。
