Middle school nutrition knowledge tool development and evaluation in North Carolina.
Middle school nutrition knowledge tool development and evaluation in North Carolina.
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北卡罗来纳州中学营养知识工具开发和评估。
DOI：
10.1108/nfs-06-2016-0079
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发表时间：
2017
影响因子：
1.2
通讯作者：
Stage,VirginiaC
中科院分区：
文献类型：
--
作者：
Hodges,Caroline;Roseno,Ashley;Duffrin,MelaniW;Stage,VirginiaC
目的本研究旨在开发一套与北卡罗来纳州（NC）健康生活基本标准相一致的营养知识测量工具，并进行实证评估。该仪器被严格评估并用于评估东部NC学生的营养知识。设计/方法/方法研究人员对16个八年级教室的250名学生进行了评估，使用了一份由研究人员开发的22个问题的营养知识问卷。评估问题与NC健康生活基本标准保持一致，建议学生应该能够：应用工具来计划健康营养，制定策略来改善饮食摄入，制定终身健康计划，并评估健康信息和产品。在研究实施前评估调查信度和效度（面）。对单项、总分和单项标准得分进行描述性统计分析。采用项目难易度和区分度指标评价工具效能。调查结果显示了适当的难度水平，只有三个例外：两个问题被认为太难了，一个问题被认为太容易了。大多数项目也显示出可接受（>0.20）或优秀（>0.40）的歧视（20分中的17分）。平均总营养知识得分为11.82 ~ 3.26分（53.7%）。在统一的标准中，学生在制定终身健康计划方面得分最高（79%），在评估健康信息方面得分最低（37.6%）。独创性/价值研究结果表明，八年级学生可能只拥有八年级预期营养知识标准的一半。需要开发更多的仪器，为研究人员提供评估营养知识的标准手段。
PurposeThis study aims to develop and empirically assess an instrument for measuring nutrition knowledge aligned to the North Carolina (NC) Healthful Living Essential Standards for teaching nutrition. The instrument was critically evaluated and used to assess nutrition knowledge in Eastern NC students.Design/methodology/approachResearchers evaluated 250 students in 16, eighth-grade classrooms using a 22-question researcher-developed nutrition knowledge questionnaire. Assessment questions were aligned with NC Healthful Living Essential Standards, which suggest students should be able to: apply tools to plan healthy nutrition, create strategies to improve dietary intake, create plans for lifelong health, and evaluate health information and products. Survey reliability and validity (face) were evaluated prior to study implementation. Descriptive statistics for individual items, total and individual standard scores were analyzed. Instrument efficacy was evaluated using item-difficulty and discrimination indexes.FindingsThe survey displayed appropriate levels of item difficulty with three exceptions: two questions were identified as too difficult, and one as too easy. The majority of items also displayed acceptable (>0.20) or excellent (>0.40) discrimination (17 out of 20). Average total nutrition knowledge score was 11.82-3.26 (53.7 per cent). Within aligned standards, students scored highest in creating plans for lifelong health (79 per cent) and lowest in evaluating health information (37.6 per cent).Originality/valueStudy findings suggest eighth-grade students may only possess half the nutrition knowledge standards expected in the eighth grade. More instrument development is needed to supply researchers with standard means of assessing nutrition knowledge.