Albar Salwa A, Alwan Nisreen A, Evans Charlotte E L, Greenwood Darren C, Cade Janet E
1Nutritional Epidemiology Group,School of Food Science and Nutrition,Room G.07,Food Science Building,University of Leeds,Leeds LS2 9JT,UK.
3Academic Unit of Primary Care and Population Sciences,Faculty of Medicine,University of Southampton,Southampton SO16 6YD,UK.
Br J Nutr. 2016 May;115(9):1678-86. doi: 10.1017/S0007114516000593. Epub 2016 Mar 15.
myfood24 Is an online 24-h dietary assessment tool developed for use among British adolescents and adults. Limited information is available regarding the validity of using new technology in assessing nutritional intake among adolescents. Thus, a relative validation of myfood24 against a face-to-face interviewer-administered 24-h multiple-pass recall (MPR) was conducted among seventy-five British adolescents aged 11-18 years. Participants were asked to complete myfood24 and an interviewer-administered MPR on the same day for 2 non-consecutive days at school. Total energy intake (EI) and nutrients recorded by the two methods were compared using intraclass correlation coefficients (ICC), Bland-Altman plots (using between and within-individual information) and weighted κ to assess the agreement. Energy, macronutrients and other reported nutrients from myfood24 demonstrated strong agreement with the interview MPR data, and ICC ranged from 0·46 for Na to 0·88 for EI. There was no significant bias between the two methods for EI, macronutrients and most reported nutrients. The mean difference between myfood24 and the interviewer-administered MPR for EI was -230 kJ (-55 kcal) (95 % CI -490, 30 kJ (-117, 7 kcal); P=0·4) with limits of agreement ranging between 39 % (3336 kJ (-797 kcal)) lower and 34 % (2874 kJ (687 kcal)) higher than the interviewer-administered MPR. There was good agreement in terms of classifying adolescents into tertiles of EI (κ w =0·64). The agreement between day 1 and day 2 was as good for myfood24 as for the interviewer-administered MPR, reflecting the reliability of myfood24. myfood24 Has the potential to collect dietary data of comparable quality with that of an interviewer-administered MPR.
myfood24是一款为英国青少年和成年人开发的在线24小时饮食评估工具。关于使用新技术评估青少年营养摄入量的有效性，目前可用信息有限。因此，在75名年龄在11至18岁的英国青少年中，对myfood24与面对面访谈者管理的24小时多次回顾法（MPR）进行了相对效度验证。参与者被要求在学校的同一天，连续两天，分别完成myfood24和访谈者管理的MPR。使用组内相关系数（ICC）、Bland-Altman图（使用个体间和个体内信息）和加权κ来比较两种方法记录的总能量摄入量（EI）和营养素，以评估一致性。myfood24记录的能量、宏量营养素和其他报告营养素与访谈MPR数据显示出高度一致性，ICC范围从钠的0.46到EI的0.88。两种方法在EI、宏量营养素和大多数报告营养素方面没有显著偏差。myfood24与访谈者管理的MPR在EI方面的平均差异为-230千焦（-55千卡）（95%CI -490, 30千焦（-117, 7千卡）；P = 0.4），一致性界限范围比访谈者管理的MPR低39%（3336千焦（-797千卡））到高34%（2874千焦（687千卡））。在将青少年按EI三分位数分类方面有良好的一致性（κw = 0.64）。myfood24在第1天和第2天之间的一致性与访谈者管理的MPR一样好，反映了myfood24的可靠性。myfood24有潜力收集与访谈者管理的MPR质量相当的饮食数据。
