Randomized controlled trial for dietary food measurement on mobile devices

Design and usability evaluation of user-centered and visual-based aids for dietary food measurement on mobile devices in a randomized controlled trial

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN14153741

Enrollment

120

Registered

2015-04-08

Start date

2013-01-14

Completion date

Unknown

Last updated

2015-07-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Diet Nutritional, Metabolic, Endocrine

Interventions

Overall, 36, 38, and 34 subjects were randomly assigned to the interactive photo interface (IPI), sketching-based interface (SBI), and traditional life-size photo (TLP) groups, respectively.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Collegiate students aged 18 or over of Chang Gung University.

Exclusion criteria

Exclusion criteria: N/A

Design outcomes

Primary

Measure	Time frame
Two types of outcomes were conducted to evaluate the usability of mobile devices for dietary measurement, and these outcomes included the correct proportion of dietary food measurement. 1. Accuracy was one type of outcome and was defined as the number of correct counts divided by overall counts 2. Absolute weight difference in grams compared with the standard.	—

Secondary

Measure	Time frame
1. The duration of the response time consumed in seconds for each item was automatically recorded by the apps. 2. Subjective evaluation for preference was determined by conducting food portion measurements and operating the interface.	—

Countries

Taiwan

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026