J Acad Nutr Diet. 2014 Dec;114(12):1902-14. doi: 10.1016/j.jand.2014.02.017. Epub 2014 Apr 24.
Practitioners and researchers are interested in assessing children's dietary intake and physical activity together to maximize resources and minimize subject burden.
Our aim was to investigate differences in dietary and/or physical activity recall accuracy by content (diet only; physical activity only; diet and physical activity), retention interval (same-day recalls in the afternoon; previous-day recalls in the morning), and grade (third; fifth).
Children (n=144; 66% African American, 13% white, 12% Hispanic, 9% other; 50% girls) from four schools were randomly selected for interviews about one of three contents. Each content group was equally divided by retention interval, each equally divided by grade, each equally divided by sex. Information concerning diet and physical activity at school was validated with school-provided breakfast and lunch observations, and accelerometry, respectively. Dietary accuracy measures were food-item omission and intrusion rates, and kilocalorie correspondence rate and inflation ratio. Physical activity accuracy measures were absolute and arithmetic differences for moderate to vigorous physical activity minutes.
For each accuracy measure, linear models determined effects of content, retention interval, grade, and their two-way and three-way interactions; ethnicity and sex were control variables.
Content was significant within four interactions: intrusion rate (content×retention-interval×grade; P=0.0004), correspondence rate (content×grade; P=0.0004), inflation ratio (content×grade; P=0.0104), and arithmetic difference (content×retention-interval×grade; P=0.0070). Retention interval was significant for correspondence rate (P=0.0004), inflation ratio (P=0.0014), and three interactions: omission rate (retention-interval×grade; P=0.0095), intrusion rate, and arithmetic difference (both already mentioned). Grade was significant for absolute difference (P=0.0233) and five interactions mentioned. Content effects depended on other factors. Grade effects were mixed. Dietary accuracy was better with same-day than previous-day retention interval.
Results do not support integrating dietary intake and physical activity in children's recalls, but do support using shorter rather than longer retention intervals to yield more accurate dietary recalls. Additional validation studies need to clarify age effects and identify evidence-based practices to improve children's accuracy for recalling dietary intake and/or physical activity.
从业者和研究人员都有兴趣同时评估儿童的饮食摄入和身体活动，以最大限度地利用资源并减少受试者负担。
我们旨在通过内容（仅饮食；仅身体活动；饮食和身体活动）、保留间隔（下午的当日回忆；上午的前一天回忆）和年级（三年级；五年级）来调查饮食和/或身体活动回忆准确性的差异。
从四所学校中随机选择 144 名儿童（66%为非裔美国人，13%为白人，12%为西班牙裔，9%为其他；50%为女孩）进行关于三个内容之一的访谈。每个内容组按保留间隔、年级、性别均等划分。与学校提供的早餐和午餐观察以及加速度计分别验证有关饮食和身体活动的信息。饮食准确性测量指标包括食物项目遗漏率和侵入率，以及千卡对应率和膨胀率。身体活动准确性测量指标为中等到剧烈身体活动分钟的绝对和算术差异。
对于每个准确性测量指标，线性模型确定了内容、保留间隔、年级及其两两和三三交互作用的影响；种族和性别为控制变量。
内容在四个交互作用中有显著影响：侵入率（内容×保留间隔×年级；P=0.0004）、对应率（内容×年级；P=0.0004）、膨胀率（内容×年级；P=0.0104）和算术差异（内容×保留间隔×年级；P=0.0070）。保留间隔对对应率（P=0.0004）、膨胀率（P=0.0014）和三个交互作用有显著影响：遗漏率（保留间隔×年级；P=0.0095）、侵入率和算术差异（两者已提到）。年级对绝对差异（P=0.0233）和五个已提到的交互作用有显著影响。内容效果取决于其他因素。年级效应混合。与前一天相比，当天的保留间隔更能提高饮食回忆的准确性。
结果不支持在儿童回忆中整合饮食摄入和身体活动，但支持使用较短的保留间隔而不是较长的保留间隔来获得更准确的饮食回忆。需要进一步的验证研究来阐明年龄效应，并确定提高儿童对饮食摄入和/或身体活动回忆准确性的循证实践。
