Effect of the IBAIP in Preterm Infants Neurodevelopment

This program consists of providing intervention, by a IBAIP trained and certified healthcare professional, with the child and his family, starting a few days before hospitalization discharge (hospital or home care) and continuing at home until the corrected age of 6 months. It focuses on the child's behaviors and consists of assisting the family in its interactions with the child so that these are adapted and responsive to the child's development needs over time through repeated interventions. A cluster randomization will be used meaning the centers are randomized, not the individual patients. The centers will be randomized before the inclusion of patients in order to allow the physiotherapists or psychomotor therapists to be trained and certified to the IBAIP before the start of the trial. Visit 1: Upon discharge from hospital, follow-up as part of standard care (control group) with at least 1 medical consultation per month during the first 6 months or according to the IBAIP program (experimental group) with one intervention before discharge from hospital and at home after hospital discharge, with1 session once a month up to 6 months corrected age (i.e. 6 to 8 sessions) in addition to standard care. Visit 2: At 6 months corrected age, parents' response to the PSI (Parenting Stress Index) questionnaire. Visit 3: At two years corrected age : * Assessment of the development quotient obtained on the BSID-IV scale during a consultation with a neuro-psychologist or pediatrician. * Parents' response to the PSI (Parenting Stress Index) questionnaire * Parents' response to the ASQ (Ages and Stages Questionnaire