Validity of the PortionSize App to Measure Children's Food Intake

Study Overview
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Brief Summary
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The purpose of this study is to assess the validity of the PortionSize™ app to quantify children's own dietary intake and children's intake by parents or caregivers.

Detailed Description
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The investigators will recruit 40 dyads (40 children aged 7-12 years old and 40 parents or caregivers) using a convenience sample for this pilot study. Children and their parents or caregivers will be trained to use the PortionSize app at Pennington Biomedical Research Center (PBRC). Children will use the PortionSize app and estimate food intake from pre-weighed meals (simulated meals) at PBRC clinic. Children will not consume the simulated meals. Children's parents or caregivers will also use the PortionSize app and estimate the food intake of their children (at least one meal and a snack each day) for two consecutive days at home.

Official Title
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Evaluating the Validity of a Novel Tool to Measure Children's Food Intake and Improve Health

Conditions
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Nutritional Assessment

Intervention / Treatment
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* Device: Validation of the PortionSize app


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Male or female Children (7-12 years) and their parents or caregivers (18-62 years) Parents who have Willingness to use the PortionSize app to estimate the intake of their child food intake (normal/regular diet) from at least a snack and a meal of child for two consecutive days Have iPhone (version 6 or above) and an operable Apple ID, password, and email address, and able to use iPhone Exclusion Criteria: Any condition or circumstance that could impede study completion Child who is a very choosy eater or has a very limited food choice

Ages Eligible for Study
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Minimum Age: 7 Years
Maximum Age: 12 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Other
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Experimental<br>Training and use of the PortionSize app by children and parents or caregivers Using the PortionSize app at the clinic of Pennington Biomedical Research Center and at home (free-living condition) Rating the satisfaction of using the PortionSize app | Device: Validation of the PortionSize app<br>* The investigators will recruit 40 dyads (40 children aged 7-12 years old and 40 parents or caregivers) using a convenience sample for this pilot study. Children and their parents or caregivers will be trained to use the PortionSize app at Pennington Biomedical Research Center (PBRC). Children will use the PortionSize app and estimate food intake from pre-weighed meals (simulated meals) at PBRC clinic. Children will not consume the simulated meals. Children's parents or caregivers will also use the PortionSize app and estimate the food intake of their children (at least one meal and a snack each day) for two consecutive days at home.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Estimation of energy intake (kcal) by children using the PortionSize app | Percent mean error and Bland-Altman analysis will be performed to determine errors in estimations of energy intake from the PortionSize app compared to estimations of energy intake from the weighed meals (the criterion measure). | One study visit of   2.5 hours | 
| Estimation of intake of food group servings (fruit, vegetable, grain, protein, and dairy) by children using the PortionSize app | Percent mean error and Bland-Altman analysis will be performed to determine errors in estimations of intake of food group servings from the PortionSize app compared to estimations of food group servings from the weighed meals (the criterion measure). | One study visit of   2.5 hours | 
| Estimation of energy intake (kcal) by parents or caregivers using the PortionSize app | Percent mean error and Bland-Altman analysis will be performed to assess errors in estimating energy intake using the PortionSize app compared to estimations of energy measured by expert raters via food photography analysis. | Parents or caregivers will assess food intake of their child (at least one meal and a snack) for two consecutive days at home | 
| Estimation of intake of food group servings (fruit, vegetable, grain, protein, and dairy) by parents or caregivers using the PortionSize app | Percent mean error and Bland-Altman analysis will be performed to assess errors in intake of food group servings using the PortionSize app compared to estimations of food group servings measured by expert raters via food photography analysis. | Parents or caregivers will assess food intake of their child (at least one meal and a snack) for two consecutive days at home | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| User satisfaction of the PortionSize app for recording food intake by children | After completing assessment of food at clinic, children will complete a Likert scale-based survey questionnaire (User Satisfaction questionnaire). The investigators updated a 10-question user satisfaction survey that has been administered in prior studies to quantify satisfaction, ease of use, and adequacy of training for mobile app. The minimum value is 1 and the maximum value is 6 for each question and higher scores indicate a higher outcome. | One study visit of   2.5 hours | 
| User satisfaction of the PortionSize app for recording food intake by parents or caregivers | After completing assessment of child's food intake, parents or caregivers will complete a Likert scale-based survey questionnaire (User Satisfaction questionnaire). . The investigators updated a 10-question user satisfaction survey that has been administered in prior studies to quantify satisfaction, ease of use, and adequacy of training for mobile app. The minimum value is 1 and the maximum value is 6 for each question and higher scores indicate a higher outcome. | Parents or caregivers will assess food intake of their child (at least one meal and a snack) for two consecutive days at home | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Dietary Assessment