Please use this identifier to cite or link to this item: https://doi.org/10.2196/25794
Title: A Web-Based Time-Use Application to Assess Diet and Movement Behavior in Asian Schoolchildren: Development and Usability Study of My E-Diary for Activities and Lifestyle (MEDAL)
Authors: Chia, Airu 
Chew, Muhammad Naeem Jia Sheng
Tan, Sarah Yi Xuan
Chan, Mei Jun 
Colega, Marjorelee T 
Toh, Jia Ying
Natarajan, Padmapriya 
Lanca, Carla
Shek, Lynette P 
Saw, Seang-Mei 
Muller-Riemenschneider, Falk 
Chong, Mary Foong-Fong 
Keywords: Science & Technology
Life Sciences & Biomedicine
Health Care Sciences & Services
Medical Informatics
time use
web-based
diet
movement behaviors
usability
schoolchildren
PHYSICAL-ACTIVITY QUESTIONNAIRE
SCHOOL-AGE-CHILDREN
SEDENTARY BEHAVIOR
YOUTH
FOOD
PHOTOGRAPHS
RELIABILITY
ACCURACY
VALIDITY
RECALL
Issue Date: 9-Jun-2021
Publisher: JMIR PUBLICATIONS, INC
Citation: Chia, Airu, Chew, Muhammad Naeem Jia Sheng, Tan, Sarah Yi Xuan, Chan, Mei Jun, Colega, Marjorelee T, Toh, Jia Ying, Natarajan, Padmapriya, Lanca, Carla, Shek, Lynette P, Saw, Seang-Mei, Muller-Riemenschneider, Falk, Chong, Mary Foong-Fong (2021-06-09). A Web-Based Time-Use Application to Assess Diet and Movement Behavior in Asian Schoolchildren: Development and Usability Study of My E-Diary for Activities and Lifestyle (MEDAL). JOURNAL OF MEDICAL INTERNET RESEARCH 23 (6). ScholarBank@NUS Repository. https://doi.org/10.2196/25794
Abstract: Background: Web-based time-use diaries for schoolchildren are limited, and existing studies focus mostly on capturing physical activities and sedentary behaviors but less comprehensively on dietary behaviors. Objective: This study aims to describe the development of My E-Diary for Activities and Lifestyle (MEDAL)-a self-administered, web-based time-use application to assess diet and movement behavior-and to evaluate its usability in schoolchildren in Singapore. Methods: MEDAL was developed through formative research and an iterative user-centric design approach involving small groups of schoolchildren (ranging from n=5 to n=15, aged 7-13 years). To test the usability, children aged 10-11 years were recruited from 2 primary schools in Singapore to complete MEDAL for 2 weekdays and 2 weekend days and complete a 10-item usability questionnaire. Results: The development process revealed that younger children (aged <9 years) were less able to complete MEDAL independently. Of the 204 participants (118/204, 57.8% boys, and 31/201, 15.4% overweight) in the usability study, 57.8% (118/204) completed 3 to 4 days of recording, whereas the rest recorded for 2 days or less. The median time taken to complete MEDAL was 14.2 minutes per day. The majority of participants agreed that instructions were clear (193/203, 95.1%), that MEDAL was easy to use (173/203, 85.2%), that they liked the application (172/202, 85.1%), and that they preferred recording their activities on the web than on paper (167/202, 82.7%). Among all the factors evaluated, recording for 4 days was the least satisfactory component reported. Compared with boys, girls reported better recall ability and agreed that the time spent on completing 1-day entry was appropriate. Conclusions: MEDAL appears to be a feasible application to capture diet and movement behaviors in children aged 10-12 years, particularly in the Asian context. Some gender differences in usability performance were observed, but the majority of the participants had a positive experience using MEDAL. The validation of the data collected through the application is in progress.
Source Title: JOURNAL OF MEDICAL INTERNET RESEARCH
URI: https://scholarbank.nus.edu.sg/handle/10635/227056
ISSN: 14388871
DOI: 10.2196/25794
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