Poster Topical Area: Nutritional Epidemiology

Location: Hall D

Poster Board Number: 739

P20-005 - Development and content validation of a questionnaire on the feasibility of mobile dietary self-monitoring device

Monday, Jun 11
8:00 AM – 3:00 PM

Objectives

The ICT-based healthcare has been increasingly perceived to be an effective way to prevent and manage chronic diseases. Dietary assessment and monitoring is an essential part of healthcare. However, to our knowledge, an instrument to assess the feasibility of mobile dietary self-monitoring device has not been developed and/or validated in Korea. We developed a questionnaire of the feasibility assessment and performed a content validation of the questionnaire.



Methods

We developed a feasibility questionnaire containing items to assess overall usage and application, usability, usefulness, satisfaction, and intention to use. A total of 10 expert panels comprised of nutrition, medical, computer science, or mobile health care specialists evaluated the relevance of the questions to usage experience of mobile application, usability, usefulness, satisfaction, and intention to use by 5-point scale. The item-level content validity index (I-CVI) was calculated as the proportion of experts giving a rating 4 or 5 among all experts. Scale-level content validity index (S-CVI) was also calculated by averaging I-CVI scores of all items. Expert panels provided comments on each item.



Results

S-CVI score of 69 items of the questionnaire was 0.86. Fifty-eight out of 69 items received 0.8 or greater score of I-CVI. We decided to retain these 58 items, but combined, revised or separated 20 items according to experts' comments. As a result, a total of 58 items were included on the questionnaire and S-CVI score of 58 items of the questionnaire was 0.91.



Conclusions

We developed a questionnaire on the feasibility of mobile dietary self-monitoring device and performed a content validation of the questionnaire resulting in a revised version. We plan to conduct a construct validation study of the questionnaire.




Funding Source:

This research was supported by the MSIP(Ministry of Science, ICT and Future Planning), Korea, under the ITRC(Information Technology Research Center) support program (IITP-2018-2014-1-00720) supervised by the IITP(Institute for Information & communications Technology Promotion)

CoAuthors: Jung Eun Lee, Sc.D. – Seoul National University

Jeong Sun Ahn

Graduate Student
Seoul National University
Seoul, Seoul-t'ukpyolsi, Republic of Korea