LACHETONPHONE : Impact of a Dedicated Consultation Using a Structured Interview Guide on Screen Time Among Adolescents Aged 12 to 17 in Primary Care
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Structured Interview Guide, Standard practice about screen use prevention for adolescents.
- Who it may be relevant to
- Registry conditions: Screen Time Exposure. Basic parameters: 12 years — 17 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Center list to be confirmed — check the primary protocol.
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
LACHETONPHONE : Impact of a Dedicated Consultation Using a Structured Interview Guide on Screen Time Among Adolescents Aged 12 to 17 in Primary Care: a Multicenter Randomized Study.
Overview
Adolescents spend a large amount of time on screens, especially smartphones. Excessive screen use has been linked to health problems such as poor sleep, reduced physical activity, academic difficulties, and mental health issues. Primary care professionals often lack practical tools to help young people address this problem. This study aims to evaluate whether a dedicated medical consultation (DC), using a structured interview guide and a screening questionnaire (e-KID), can help adolescents aged 12 to 17 reduce and improve their screen use. When excessive screen exposure is identified, adolescents are offered a personalized consultation with a healthcare professional. Together, they discuss screen habits, health impacts, and set achievable goals to change usage patterns. The investigator hypothesizes that adolescents who receive this dedicated consultation by healthcare providers trained with a specific grid will better reduce their smartphone screen time and adopt healthier screen use habits compared to those receiving usual care.
Interventions
- Behavioral Structured Interview Guide
a dedicated consultation with a structured interview guide - Behavioral Standard practice about screen use prevention for adolescents
Standard practice
Primary outcome measures
- Change in time spent on the smartphone, measured in hours and minutes (recorded via screenshots), between the baseline visit and one month later, over a period of 7 consecutive days and outside school holidays, in both groups. [Time frame: At Baseline and 1-month follow-up (7 consecutive days of measurement at each time point, excluding school holidays)]
Eligibility criteria
Inclusion criteria
- Adolescent aged 12 to 17 years at the time of enrolment (participants aged 17 must not have turned 18 on the day of inclusion).
- Adolescent owning a smartphone, with usage >14 hours/week and a score >10/21 on the early overexposure screening questionnaire (e-KID).
- Adolescent and parent(s) or legal guardian(s) able to understand the objectives of the research.
- Adolescent whose parent(s) or legal guardian(s) have signed an electronic informed consent (e-Consent) prior to any study-related procedures.
(The minor's signature will be sought but is not mandatory. In accordance with Article L1122-2, consent from one parent/legal guardian is sufficient for inclusion and data analysis; however, consent from both parents will be systematically sought.)
\- Adolescent affiliated with a health insurance plan (either as the beneficiary or dependent).
Exclusion criteria
- Adolescent with severe psychiatric disorders (DSM-V diagnosis and/or treatment with amphetamines, neuroleptics, or psychotropic drugs).
- Adolescent currently excluded from participation due to a previous or ongoing study.
- Adolescent under legal guardianship or conservatorship (tutelle or curatelle).
- Adolescent female who is pregnant or breastfeeding (self-reported).
- Adolescent under judicial protection (sauvegarde de justice).
- Adolescent in an emergency situation, with comprehension difficulties, or cognitive impairment.
- Adolescent who does not speak or understand French.
- Adolescent who opposes participation in the study.
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Allocation
- Randomized
- Model
- Parallel assignment
- Masking
- Single blind
- Primary purpose
- Prevention
Study locations
Center list to be confirmed — check the primary protocol.
Identifiers
NCT: NCT07685951 · 9461 · 2025-A01775-44