Department of Family Relations & Applied Nutrition, University of Guelph, Guelph, ON, Canada.
Department of Geography, Environment and Geomatics, University of Guelph, Guelph, ON, Canada.
Appl Physiol Nutr Metab. 2023 Dec 1;48(12):919-931. doi: 10.1139/apnm-2023-0080. Epub 2023 Oct 3.
For the first time since its introduction, the 2019 Canada's Food Guide (2019-CFG) highlighted specific guidance on eating practices, i.e., recommendations on where, when, why, and how to eat. The Canadian Eating Practices Screener / Questionnaire court canadien sur les pratiques alimentaires was developed to assess eating practices based on the 2019-CFG healthy eating recommendations. The objective of this cross-sectional study was to assess the construct validity and reliability of the Canadian Eating Practices Screener. From July to December 2021, adults ( = 154) aged 18-65 years completed a sociodemographic questionnaire and the screener. Construct validity was assessed by examining variability in screener scores, by comparing screener scores among subgroups with hypothesized differences in eating practices, and by examining the correlation between screener scores and fruit and vegetable intake. Reliability, i.e., internal consistency, was assessed by calculating Cronbach's coefficient alpha. Screener item scores were summed to provide a total score ranging from 21 to 105. The mean screener score was 76 (SD = 8.4; maximum, 105), ranging from 53 (1st percentile) to 92 (99th percentile). Differences in total scores in hypothesized directions were observed by age ( = 0.006), perceived income adequacy ( = 0.09), educational attainment ( = 0.002), and smoking status ( = 0.09), but not by gender or health literacy level. The correlation between screener scores and fruit and vegetable intake was 0.29 ( = 0.002). The Cronbach's coefficient alpha was 0.79, suggesting acceptable to high internal consistency. Study findings provide preliminary evidence of the screener's construct validity and reliability, supporting its use to assess eating practices based on the 2019-CFG healthy eating recommendations.
自发布以来，2019 年加拿大食物指南（2019-CFG）首次强调了饮食实践的具体指导，即关于在哪里、何时、为什么以及如何进食的建议。加拿大饮食实践筛查问卷/问卷（Canadian Eating Practices Screener / Questionnaire）是根据 2019-CFG 健康饮食建议开发的，用于评估饮食实践。本横断面研究的目的是评估加拿大饮食实践筛查问卷的结构效度和信度。2021 年 7 月至 12 月，年龄在 18-65 岁的成年人（=154 人）完成了一份社会人口统计学问卷和筛查问卷。结构效度通过检查筛查问卷评分的变异性、比较有假设差异的饮食实践亚组的筛查问卷评分以及检查筛查问卷评分与水果和蔬菜摄入量之间的相关性来评估。可靠性，即内部一致性，通过计算 Cronbach 系数 alpha 来评估。筛查问卷项目得分相加，提供总分范围为 21 至 105。平均筛查问卷得分为 76（SD=8.4；最大值，105），范围为 53（第 1 个百分位数）至 92（第 99 个百分位数）。在假设的方向上，总分存在差异，差异与年龄（=0.006）、感知收入充足度（=0.09）、教育程度（=0.002）和吸烟状况（=0.09）有关，但与性别或健康素养水平无关。筛查问卷评分与水果和蔬菜摄入量之间的相关性为 0.29（=0.002）。Cronbach 系数 alpha 为 0.79，表明内部一致性可接受或较高。研究结果初步证明了筛查问卷的结构效度和信度，支持其用于根据 2019-CFG 健康饮食建议评估饮食实践。
