[Effects of the Decision of the German Constitutional Court on mechanical restraint in 2018 : Coercive measures in the psychiatric hospitals in Baden-Wuerttemberg in 2019 compared to the years 2015-2017].

On 23 July 2018 the German Constitutional Court decided that mechanical restraint in psychiatric patients with 5 or 7‑point mechanical restraint lasting longer than 30 min requires a judicial authorization. On the same day, the German Association for Psychiatry and Psychotherapy (DGPPN) published guidelines on the prevention of coercion and violence. Together, this can be considered as the strongest intervention to reduce coercion on a national level worldwide. The registry for coercive measures in the Federal State of Baden-Wuerttemberg, available since 2015 and comprising all 32 hospitals licensed to admit involuntary patients, has made it possible to evaluate the effect of the legal change. We analyzed the mean percentage of patients subjected to coercive measures and the mean cumulative duration of these interventions in ICD-10 diagnostic groups in psychiatric hospitals from 2015 to 2017 compared to 2019 among a total of 438,003 admissions. The percentage of patients subjected to any kind of freedom-restricting coercion (restraint or seclusion) decreased from 6.7% (average 2015-2017) to 5.8% in 2019 (p < 0.001). Effects were strongest in patients with organic (F0) and schizophrenic disorders (F2). The percentage of patients subjected to mechanical restraint decreased from 4.8% to 3.6% in 2019, and the percentage of mechanical restraints less than 30 min increased from 1.8% to 10.5%. Vice versa, the percentage of patients subjected to seclusion increased from 2.9% to 3.3%. The median cumulated duration of restraint and seclusion per affected case decreased from 12.7h to 10.9 h (median). The intervention was probably responsible for a reduction of the percentage of cases subjected to coercive measures by about 13% and a reduction of the duration of these measures per affected case by about 14%.