Coercive measures (such as seclusion, mechanical restraint, and forced medication) during psychiatric inpatient treatment should be avoided whenever possible. Different interventions were already developed to reduce coercion, but for their effective application, it is crucial to know the risk factors of individuals and clinical situations that might be associated with coercion. Since the results of previous studies differ considerably the current study aims to fill this gap by evaluating the course of the exertion of coercion in detail.

In this study, we analyzed clinical, procedural, and sociodemographic data from patients (n = 16,607 cases) who were treated as inpatients in Switzerland’s largest psychiatric institution with 320 beds during the years 2017 to 2020. We used regression models to identify predictors for the exertion of coercion, the number of coercive measures during a treatment episode and time until exertion of the first and last coercive measure.

Coercive measures are mostly used during the first days of treatment. We identified clinical parameters such as manic or psychotic episodes to be the most relevant predictors for the exertion of coercion. Cases with those disorders also received coercion more often and earlier in their treatment course than other diagnostic groups. Other promoting factors for frequency and early application of coercion were involuntary admission and factors of chronicity and clinical severity.

Knowing the risk factors may help to target preventive strategies for those at highest risk. In particular, interventions should focus on the critical timeframe at the beginning of treatment.

The decision to adopt forced medication in psychiatric care is particularly relevant from a clinical and ethical viewpoint. The European Commission has funded the EUNOMIA study in order to develop European recommendations for good clinical practice on coercive measures, including forced medication.

The recommendations on forced medication have been developed in 11 countries with the involvement of national clinical leaders, key-professionals and stakeholders’ representatives. The national recommendations have been subsequently summarized into a European shared document.

Several cross-national differences exist in the use of forced medication. These differences are mainly due to legal and policy making aspects, rather than to clinical situations. In fact, countries agreed that forced medication can be allowed only if the following criteria are present: 1) a therapeutic intervention is urgently needed; 2) the voluntary intake of medications is consistently rejected; 3) the patient is not aware of his/her condition. Patients’ dignity, privacy and safety shall be preserved at all times.

The results of our study show the need of developing guidelines on the use of forced medication in psychiatric practice, that should be considered as the last resort and only when other therapeutic option have failed.