Reproducibility and validity of the secondary level School-Based Nutrition Monitoring student questionnaire
Reproducibility and validity of the secondary level School-Based Nutrition Monitoring student questionnaire
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DOI：
10.1053/jada.2003.50031
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发表时间：
2003-02-01
影响因子：
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通讯作者：
Ward, JL
中科院分区：
文献类型：
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作者：
Hoelscher, DM;Day, RS;Ward, JL
目的评价校本营养监测(SBNM)中学生问卷的重复性和效度，采用重测设计，在同一天(上午和下午，n=254)，适当时间隔9~14天(n=259，n=259)进行问卷调查。通过将问卷中选择的食物与同一参照期(昨天)的单一24小时回忆中报告的食物进行比较来评估有效性。受试者/背景为德克萨斯州中部中学的八年级学生：男性和女性，大约75%是白人，用于再生性研究，其中15%是西班牙裔，6%是非裔美国人；在验证研究中，大约38%的白人，41%的西班牙裔和17%的非裔美国人。统计分析使用Spearman等级顺序相关、kappa统计和百分比一致性来进行重复性和验证性。结果对于重复性研究，关于昨天食物摄入量的问题的一致性为70%到98%，kappa统计范围在0.54到0.93之间，相关性在0.66到0.97之间。关于最近的体育活动的问题有很高的符合率(66%对89%)，同样的问题还有“通常”的体育活动项目、减肥和食物选择行为。营养知识项目信度相对较低，一致性在47%~92%之间，kappa统计量在0.30~0.56之间。态度问题的一致性(50%至87%)、kappa统计量(0.27至0.52)和相关性(0.33至0.63)较弱。在验证研究中，相关系数从面包的0.32到牛奶和豆类的0.68不等。面包的符合率为38%，重度的符合率为%。应用/结论SBNM第二问卷上的大多数问题具有可接受的重复性，而对食物选择行为的验证结果与该年龄段的其他膳食评估工具相似或更好。这份问卷是一种有用的流行病学工具，可用于监测、评估人群中广泛的干预效果或提供选定营养和体力活动相关结构的需求评估数据。
Objective To evaluate the reproducibility and validity of the School-Based Nutrition Monitoring (SBNM) secondary level student questionnaire.Design Reproducibility was evaluated using a test-retest study design by administering the questionnaire on the same day (morning and afternoon, n=254) and, when appropriate, 9 to 14 days apart (n=259). Validity was assessed by comparing foods selected oil the questionnaire with foods reported from a single 24-hour recall covering the same referent period (yesterday) in 209 students.Subjects/setting Eighth grade students in middle schools from central Texas were used: male and female, approximately 75% white, for the reproducibility study, with 15% Hispanic, 6% African American; for the validation study, approximately 38% white, 41% Hispanic, and 17% African American.Statistical analysis Spearman rank order correlation, kappa statistic, and percentage agreement were used for both reproducibility and the validation.Results For the reproducibility study, agreement for questions about food intake "yesterday" were 70% to 98%, with kappa statistics ranging from 0.54 to 0.93 and correlations between 0.66 and 0.97. Questions on recent physical activity had high agreement (66% to 89%) as did "usual" physical activity items, weight loss, and food selection behaviors. Nutrition knowledge items showed relatively weaker reliability: agreements ranged from 47% to 92%, with kappa statistics between 0.30 and 0.56. Attitude questions had weaker agreement (50% to 87%), kappa statistics (0.27 to 0.52), and correlations (0.33 to 0.63). For the validation study, correlation coefficients ranged from 0.32 for breads to 0.68 for milk and beans. Percentage agreement ranged from 38% for breads to 89% for gravy.Applications/conclusions Most questions on the SBNM secondary questionnaire were found to have acceptable reproducibility, whereas validation of food choice behaviors showed results similar to or better than other dietary assessment instruments for this age group. This questionnaire is a useful epidemiologic tool for surveillance, assessing broad intervention effects among groups or providing needs assessment data on selected nutrition and physical activity-related constructs.