[Psychiatric readmissions: individual and organizational factors]

Psychiatric readmission often constitutes a criterion to assess the effects of various therapies, as well as the impact of organizational changes in the healthcare system. It is used to characterize relapse or decompensation. The purpose of this study was to determine readmission rates and identify individual and organizational factors associated with significant variations in these rates.

Adult psychiatric readmissions were identified from the full-time hospital stays registered in psychiatric wards in 2011-2012 in the Nord and Pas-de-Calais departments of France, available in the medical the RimP psychiatric admission database. Readmission rates for various follow-up periods after discharge were measured by Kaplan-Meier survival analysis and multivariate analysis was conducted using the Cox proportional hazards model.

Approximately 30,000 adults were hospitalized full-time in psychiatric units of the region during the study period. The 24-month readmission rate was 51.6% (95%CI: 50.8-52.3%). The Cox model showed that a diagnosis of schizophrenia (F2 - HR = 1.72 - 95%CI: 1.61-1.84 - p < 0.001) and personality disorder (F6 - HR = 1.45 - 95%CI: 1.32-1.58 - p < 0.001) was associated with a higher readmission rate. Readmission rates were higher among dependent patients in non-profit private hospitals.

Psychiatric readmission is a very frequent event and is linked to organizational as well as individual factors.