Investigating Fruit and Vegetable Consumption Using the Transtheoretical Model
Investigating Fruit and Vegetable Consumption Using the Transtheoretical Model
复制标题
DOI：
10.4278/ajhp.071218138
复制
发表时间：
2010-05-01
影响因子：
2.7
通讯作者：
Dishman, Rod K.
中科院分区：
文献类型：
--
作者：
Horwath, Caroline C.;Nigg, Claudio R.;Dishman, Rod K.
目的。测试跨理论模型 (TTM) 对成人水果/蔬菜消费的适用性。设计。横截面随机数字拨号调查。设置。夏威夷。主题。 700 名（62.6% 女性；年龄 [平均 +/- SD]，47 +/- 17.1 岁；教育程度 [平均 +/- SD]，14.6 +/- 2.8 岁；35.0% 白人，31.1% 亚洲人，22.1% 夏威夷本地人/太平洋岛民，11.8% 其他）。阶段、过程、自我效能、决策平衡和自我报告的水果/蔬菜消费。分析。验证性因素分析测试了因素结构。方差分析用于探索构建中的阶段差异。结果。阶段分布为预思考（33%）、思考（4%）、准备（37%）、行动（3%）和维持（23%）。具有两个高阶相关因素（经验和行为）的 10 因素过程模型提供了最佳数据拟合（chi(2) = 1446.12；df = 366；p < .0001；比较拟合指数 [CFI] = .89；标准化均方根残差 [SRMR] = .05）。自我效能结构与数据拟合良好（chi(2) = 81.86；df = 9；p < .0001；CFI = .94；SRMR = .04），决策平衡结构也是如此（chi(2) = 37.42；df = 19；p = .007；CFI = .99；SRMR = .02）。过程、自我效能、决策平衡和水果/蔬菜消费行为在不同阶段存在显着差异，大多数变量的效应大小中等。结论。这些变量显示出与理论测量模型的充分拟合。关于自我效能、利弊和水果/蔬菜消费的阶段差异的 TTM 预测得到证实；然而，大多数体验和行为过程在早期阶段有所增加，然后趋于平稳（Am J Health Promot 2010;24[5]:324-333。）
Purpose. Test the applicability of the transtheoretical model (TTM) to adult fruit/vegetable consumption.Design. Cross-sectional random-digit dial survey.Setting. Hawaii.Subjects. 700(62.6% female; age [mean +/- SD], 47 +/- 17.1 years; education [mean +/- SD], 14.6 +/- 2.8 years; 35.0% white, 31.1% Asian, 22.1% native Hawaiian/Pacific Islander, 11.8% other).Measures. Stages, processes, self-efficacy, decisional balance, and self-reported fruit/vegetable consumption.Analysis. Confirmatory factor analysis tested the factor structure. Analyses of variance were used to explore stage differences in constructs.Results. Stage distribution was precontemplation (33%), contemplation (4%), preparation (37%), action (3%), and maintenance (23%). A 10-factor process model with two higher-order correlated factors (experiential and behavioral) provided the best data fit (chi(2) = 1446.12; df = 366; p < .0001; comparative fit index [CFI] = .89; standardized root mean square residual [SRMR] = .05). The self-efficacy structure fit the data well (chi(2) = 81.86; df = 9; p < .0001; CFI = .94; SRMR = .04), as did the decisional balance structure (chi(2) = 37.42; df = 19; p = .007; CFI = .99; SRMR = .02). Processes, self-efficacy, decisional balance, and fruit/vegetable consumption behavior differed significantly by stage, with medium effect sizes for most variables.Conclusion. The variables revealed adequate fit to the theorized measurement models. TTM predictions regarding stage differences in self-efficacy, pros and cons, and fruit/vegetable consumption were confirmed; however, most experiential and behavioral processes increased in the early stages and then leveled off (Am J Health Promot 2010;24[5]:324-333.)