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.
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.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
OTHER
Masking
NONE
Enrollment
31
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.
Pennington Biomedical Research Center
Baton Rouge, Louisiana, United States
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).
Time frame: One study visit of ~ 2.5 hours
Estimation of Intake of Food Group Servings (Fruit) 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).
Time frame: One study visit of ~ 2.5 hours
Estimation of Energy Intake (kcal/Day) 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.
Time frame: 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) 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.
Time frame: Parents or caregivers will assess food intake of their child (at least one meal and a snack) for two consecutive days at home
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 score is 1 and the maximum score is 6 for each question and higher scores indicate a higher outcome.
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Time frame: 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 score is 1 and the maximum score is 6 for each question and higher scores indicate a higher outcome.
Time frame: Parents or caregivers will assess food intake of their child (at least one meal and a snack) for two consecutive days at home