[j] [j] [j] [j] [j] [j] [j] [j] [j] [j] [j]手机饮食记录在成人和青少年中的可用性评估% a Daugherty,Bethany L % a Schap,TusaRebecca E % a Ettienne-Gittens,Reynolette % a Zhu,Fengqing M % a Bosch,Marc % a Delp,Edward J % a Ebert,David S % a Kerr,Deborah a % a Boushey,Carol J %+流行病学项目，夏威夷大学癌症中心，檀香山，HI, 96813, 1 808 564 5915，cjboushey@cc.hawaii.edu %K手机饮食记录%K饮食评估%K技术%K图像分析%K体积估计%D 2012 %7 2012年4月13日背景:手机饮食记录的开发有可能改善与当前饮食评估方法相关的许多负担。在使用手机食物记录时，受访者在进食前后捕捉到他们的食物和饮料的图像。图像分析和体积估计方法允许食品的自动识别和体积估计。为了获得合适的图像，图像中必须包含所有食品和饮料以及基准标记。目的:评估青少年和成年人在使用手机食物记录捕捉图像时的一套明确的技能，并比较成年人和青少年对使用手机食物记录的看法和偏好。方法:招募135名志愿者(青少年78名，成人57名)，在控制条件下使用手机进食记录进行一餐或两餐。志愿者们在第一餐前接受了使用手机食物记录的指导，在进食前后拍摄了食物和饮料的图像，并参加了一个反馈环节。我们使用卡方来比较成人和青少年之间的技能、偏好和感知，使用McNemar检验来比较青少年和成人之间的比较。 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. %M 22504018 %R 10.2196/jmir.1967 %U //www.mybigtv.com/2012/2/e58/ %U https://doi.org/10.2196/jmir.1967 %U http://www.ncbi.nlm.nih.gov/pubmed/22504018

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