This multicenter prospective quasi-experimental study aims to compare the effectiveness of day hospitalization versus full-time hospitalization for adolescents with severe obesity. The primary outcome is the change in BMI z-score measured six months after the end of treatment.
Adolescents aged 12-20 years
Severe obesity (IOTF > 30)
Admitted to participating centers
Covered by health insurance
Acute psychiatric disorder requiring hospitalization
Secondary obesity due to endocrine disorders
Age < 12 or > 20 years
Inability to provide consent Emergency situation Refusal to participate