评估“改变生活的食物扫描器”应用程序在减少儿童糖摄入量方面的效果：一项随机试点和可行性研究。

Evaluating the Change4Life Food Scanner app in reducing children's sugar intake: a randomised pilot and feasibility study.

机构信息

School of Health and Related Research, University of Sheffield, Sheffield, UK.

出版信息

Lancet. 2022 Nov;400 Suppl 1:S13. doi: 10.1016/S0140-6736(22)02223-1. Epub 2022 Nov 24.

DOI:10.1016/S0140-6736(22)02223-1

PMID:36929955

Abstract

BACKGROUND

The Change4Life Food Scanner app displays nutritional information using visual images alongside traffic light labels. The app's effectiveness for improving dietary choices is unknown. This study investigated the feasibility and acceptability of evaluating the effectiveness of the Food Scanner app in reducing children's sugar intake in the UK.

METHODS

Adopting a non-blinded parallel trial design, we randomly assigned (1:1) 126 parents of children aged 4-11 years through block randomisation sequences into a 3-month intervention consisting of exposure to the Change4Life Food Scanner app (version 1.6; ie, the intervention group [n=62]) or no intervention (ie, the control group [n=64]). Participants completed baseline and 3-month post-intervention measures of dietary intake (3-day food diary) and trial acceptability measures. The intervention group completed fortnightly app engagement measures. Ethical approval was obtained by the University of Sheffield Research Ethics Committee (026380).

FINDINGS

64 (51%) of 126 participants completed the study (29 [45%] in the intervention group and 35 [55%] in the control group). 51 (80%) of 64 reported that the study was easy to complete and 62 (97%) found receiving task completion reminders helpful. App engagement decreased throughout the study (eg, mean engagement time was 18·01 min [SD 27·15] in week 2, and 6·76 min [11·56] in week 12). 18 (64%) of 28 participants reported high overall app acceptability; however, seven (25%) did not find the app helpful. 24 (86%) of 28 reported high acceptability for the app's use of sugar cube images, which were rated as easy to understand and useful to supplement front of package nutritional labels. Six (21%) of 28 did not find sugar cube images helpful and 20 (71%) had low acceptability of the app aiding food purchasing decisions. 45 (73%) of 62 were willing to continue with the study for a 12-month trial.

INTERPRETATION

Despite a high attrition rate, study procedures were considered acceptable by most participants. Acceptability of the Food Scanner app was varied, and participants did not find the app helpful for food purchases. Analysis of preliminary efficacy of the intervention is ongoing, which will inform design parameters for a future large-scale trial.

FUNDING

Wellcome Trust.

摘要

背景

Change4Life Food Scanner 应用程序使用视觉图像和交通灯标签来显示营养信息。该应用程序在改善饮食选择方面的有效性尚不清楚。本研究旨在调查评估 Food Scanner 应用程序在减少英国儿童糖摄入量方面的有效性的可行性和可接受性。

方法

采用非盲平行试验设计，我们通过块随机序列将 126 名 4-11 岁儿童的家长随机分配（1:1）至 3 个月的干预组（接触 Change4Life Food Scanner 应用程序[版本 1.6；即干预组，n=62]）或对照组（不干预，n=64）。参与者在基线和干预后 3 个月完成饮食摄入（3 天食物日记）和试验可接受性测量。干预组每两周完成一次应用程序参与度测量。谢菲尔德大学伦理委员会（026380）批准了这项研究。

结果

126 名参与者中，有 64 名（51%）完成了研究（干预组 29 名[45%]，对照组 35 名[55%]）。62 名（97%）报告研究很容易完成，64 名（80%）报告收到任务完成提醒很有帮助。整个研究过程中应用程序的参与度都在下降（例如，第 2 周的平均参与时间为 18.01 分钟[27.15 秒]，第 12 周为 6.76 分钟[11.56 秒]）。28 名参与者中有 18 名（64%）报告总体上对应用程序非常满意；然而，有 7 名（25%）认为应用程序没有帮助。28 名参与者中有 24 名（86%）对应用程序使用糖立方图像表示高度接受，他们认为这些图像易于理解，有助于补充包装正面的营养标签。28 名参与者中有 6 名（21%）认为糖立方图像没有帮助，20 名（71%）对应用程序帮助购买食物的能力接受度较低。62 名参与者中有 45 名（73%）愿意继续参加为期 12 个月的试验。