Suicidal behaviors seriously alter the vital and functional prognosis of adolescents. Although the literature has lighted out a considerable number of risk factors for suicide attempts in youth, theoretical models - among which bio-psycho-social models - still lack empirical evidence. More specifically, the way adverse life events dynamically interact together and with the individual's diathesis to precipitate suicidal attempts remains unclear. Studies of life trajectories have opened an alternative approach to traditional linear epidemiological analysis to capture such a complex process. To date, adverse trajectories approaches never have been applied to the period immediately preceding the occurrence of the suicidal gesture (proximal adverse trajectories).

Inclusion Criteria:

• Inclusion criteria for cases
• Youth aged 15-24 inclusive
• Who stayed at the hospital or in the emergency room for less than 15 days after a first suicide attempt
• Who were discharged less than 15 days ago
• Who gave their informed consent for majors, or whose parents gave their informed consent for minors Inclusion criteria for controls
• Youth aged 15-24 inclusive
• Who have never experienced any suicidal ideation or suicide attempt
• Who gave their informed consent for majors, or whose parents gave their informed consent for minors Inclusion criteria for informants
• Close relatives of the participant
• Who are major
• Who lived in the same household as the participant or have interacted with him/her for more than half the weeks of the year preceding the index suicide attempt

Exclusion Criteria:

• No consent or consent withdrawal for majors and/or their parents for minors
• Neurological or psychiatric condition altering the capacity to understand

Patient recruitment will be supported by the VigilanS program. VigilanS is a suicide recurrence prevention device implemented in all establishments in the Hauts-de-France region that receive patients who have attempted suicide (www.dispositifvigilans.org).