Novel Technologies for Assessing Dietary Intake: Evaluating the Usability of a Mobile Telephone Food Record Among Adults and Adolescents

被引:111
作者
Daugherty, Bethany L. [2 ]
Schap, TusaRebecca E. [2 ]
Ettienne-Gittens, Reynolette [1 ]
Zhu, Fengqing M. [3 ]
Bosch, Marc [3 ]
Delp, Edward J. [3 ]
Ebert, David S. [3 ]
Kerr, Deborah A. [4 ]
Boushey, Carol J. [1 ,2 ]
机构
[1] Univ Hawaii, Ctr Canc, Program Epidemiol, Honolulu, HI 96813 USA
[2] Purdue Univ, Dept Nutr, W Lafayette, IN 47907 USA
[3] Purdue Univ, Sch Elect & Comp Engn, W Lafayette, IN 47907 USA
[4] Curtin Univ, Sch Publ Hlth, Perth, WA, Australia
关键词
Mobile telephone food record; dietary assessment; technology; image analysis; volume estimation; GENOME-WIDE ASSOCIATION; DOUBLY LABELED WATER; ENERGY-INTAKE; VALIDITY; LOCI; TIME;
D O I
10.2196/jmir.1967
中图分类号
R19 [保健组织与事业(卫生事业管理)];
学科分类号
摘要
Background: The development of a mobile telephone food record has the potential to ameliorate much of the burden associated with current methods of dietary assessment. When using the mobile telephone food record, respondents capture an image of their foods and beverages before and after eating. Methods of image analysis and volume estimation allow for automatic identification and volume estimation of foods. To obtain a suitable image, all foods and beverages and a fiducial marker must be included in the image. Objective: To evaluate a defined set of skills among adolescents and adults when using the mobile telephone food record to capture images and to compare the perceptions and preferences between adults and adolescents regarding their use of the mobile telephone food record. Methods: We recruited 135 volunteers (78 adolescents, 57 adults) to use the mobile telephone food record for one or two meals under controlled conditions. Volunteers received instruction for using the mobile telephone food record prior to their first meal, captured images of foods and beverages before and after eating, and participated in a feedback session. We used chi-square for comparisons of the set of skills, preferences, and perceptions between the adults and adolescents, and McNemar test for comparisons within the adolescents and adults. Results: Adults were more likely than adolescents to include all foods and beverages in the before and after images, but both age groups had difficulty including the entire fiducial marker. Compared with adolescents, significantly more adults had to capture more than one image before (38% vs 58%, P = .03) and after (25% vs 50%, P = .008) meal session 1 to obtain a suitable image. Despite being less efficient when using the mobile telephone food record, adults were more likely than adolescents to perceive remembering to capture images as easy (P < .001). Conclusions: A majority of both age groups were able to follow the defined set of skills; however, adults were less efficient when using the mobile telephone food record. Additional interactive training will likely be necessary for all users to provide extra practice in capturing images before entering a free-living situation. These results will inform age-specific development of the mobile telephone food record that may translate to a more accurate method of dietary assessment.
引用
收藏
页码:156 / 167
页数:12
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