Location Initiated Individualized Texts for Adolescent Health (LIITAH)

Study Overview
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Brief Summary
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The goal of this study is to test whether the mobile application (app.) helps adolescents make healthy food choices, decreasing calories purchased from restaurants, fewer number of visits to restaurants, and if it has an impact on their body mass index (BMI). Eligible adolescents will be enrolled in the study along with a parent for approximately 6 months.

Official Title
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Location Initiated Individualized Texts for Adolescent Health (LIITAH)

Conditions
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Overweight, Obese, Healthy

Intervention / Treatment
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* Other: Full version of the LIITah App.
* Other: Partial App. (ELI and SNAP only)


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: eat restaurant food at least 3 times a week and have a parent who agrees to participate. Exclusion Criteria: -

Ages Eligible for Study
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Minimum Age: 13 Years
Maximum Age: 17 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: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Full version of the LIITah App.<br>Participants will be given the LIITAH app. which consists of 1) enhanced location identification (ELI), 2) self reported nutrients by annotated photos (SNAP), 3) delivery of individually and culturally tailored point of purchase (POP) prompts along with tailored messages sent at other times of the day, 4) use of app. in connection with parents, 5) goal setting, 6) a point system | Other: Full version of the LIITah App.<br>* Participants will download the LIITAH app. For the first 2 weeks the app. will only record presence in a restaurant and ask users to submit photos of their food. in week 3 all of the program features will be activated.<br>|
| Active Comparator: Partial App. (ELI and SNAP only)<br>Participants will be given only the ELI and SNAP components. It will detect their presence in a restaurant and allow users to document their purchases by submitting annotated photos, but it will not deliver any POP prompts encouraging them to make healthy choices, or messages at other times of the day. | Other: Partial App. (ELI and SNAP only)<br>* Participants will download the LIITAH app. It will detect their presence in a restaurant and users will submit annotated photos of their purchases<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Visits to restaurants | number of visits will be obtained from the app. | over 6 months | 
| Calories purchased from restaurants | number of calories purchased by the adolescent and for the adolescent will be assessed using annotated photos, and nutritional data from the restaurant menus. | over 6 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in body mass index (BMI) | height and weight will be obtained | baseline, 6 months |