Department of Nutrition, University of California, Davis, Davis, CA; Center for Nutrition in Schools, University of California, Davis, Davis, CA.
Department of Population Health and Reproduction, University of California, Davis, Davis, CA; Department of Human Ecology, University of California, Davis, Davis, CA; University of California Agriculture and Natural Resources, University of California Cooperative Extension, Davis, CA.
J Nutr Educ Behav. 2014 Nov-Dec;46(6):e13-21. doi: 10.1016/j.jneb.2014.08.010. Epub 2014 Nov 7.
To provide a framework for implementation of multicomponent, school-based nutrition interventions. This article describes the research methods for the Shaping Healthy Choices Program, a model to improve nutrition and health-related knowledge and behaviors among school-aged children.
Longitudinal, pretest/posttest, randomized, controlled intervention.
Four elementary schools in California.
Fourth-grade students at intervention (n = 252) and control (n = 238) schools and their parents and teachers. Power analyses demonstrate that a minimum of 159 students per group will be needed to achieve sufficient power. The sample size was determined using the variables of nutrition knowledge, vegetable preference score, and body mass index percentile.
A multicomponent school-based nutrition education intervention over 1 academic year, followed by activities to support sustainability of the program.
Dietary and nutrition knowledge and behavior, critical thinking skills, healthy food preferences and consumption, and physical activity will be measured using a nutrition knowledge questionnaire, a food frequency questionnaire, a vegetable preferences assessment tool, the Test of Basic Science Process Skills, digital photography of plate waste, PolarActive accelerometers, anthropometrics, a parent questionnaire, and the School and Community Actions for Nutrition survey.
Evaluation will include quantitative and qualitative measures. Quantitative data will use paired t, chi-square, and Mann-Whitney U tests and regression modeling using P = .05 to determine statistical significance.
为实施多成分、以学校为基础的营养干预措施提供框架。本文描述了“塑造健康选择计划”的研究方法，该计划旨在提高学龄儿童的营养和与健康相关的知识和行为。
纵向、前测/后测、随机、对照干预。
加利福尼亚州的四所小学。
干预（n = 252）和对照组（n = 238）学校的四年级学生及其家长和教师。功效分析表明，每组需要至少 159 名学生才能达到足够的功效。样本量是根据营养知识、蔬菜偏好评分和体重指数百分位数的变量来确定的。
为期一学年的多成分以学校为基础的营养教育干预措施，随后开展支持该计划可持续性的活动。
使用营养知识问卷、食物频率问卷、蔬菜偏好评估工具、基础科学过程技能测试、餐盘浪费的数码摄影、PolarActive 加速计、人体测量学、家长问卷和学校和社区营养行动计划，测量饮食和营养知识和行为、批判性思维技能、健康食物偏好和消费以及身体活动。
评估将包括定量和定性措施。定量数据将使用配对 t 检验、卡方检验和曼-惠特尼 U 检验以及回归建模（使用 P =.05 确定统计学意义）。
