Evaluation of discharge management in inpatient psychiatric care in Germany (E2-PSY): study protocol for a mixed-methods observational study
The E2-PSY study protocol outlines a mixed-methods observational design to evaluate the effectiveness of Germany's legally mandated discharge management in psychiatric inpatient care by integrating nationwide claims data with surveys and interviews from patients, relatives, and providers to assess implementation, identify barriers, and improve continuity of care.
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Mental health challenges are a massive part of modern life, affecting billions of people worldwide. In Germany, the system for treating these conditions relies heavily on hospitals, where thousands of people receive care for serious psychiatric issues every year. However, the moment a patient leaves the hospital is often the most dangerous time. This transition from a structured, 24-hour environment back to the community is a fragile period where the risk of falling ill again, returning to the hospital, or facing social isolation spikes dramatically. To fix this, German law now requires hospitals to have a structured plan for every single patient leaving care. This plan, known as discharge management, is meant to act as a bridge, ensuring that a patient does not simply walk out the door but is instead connected immediately to doctors, therapists, and support services on the outside. The question facing health officials and doctors is whether this legal requirement is actually working as intended, or if gaps remain that leave vulnerable people behind.
A new research project called E2-PSY is designed to answer exactly that question. Rather than looking at just one piece of the puzzle, the researchers are assembling a complete picture by combining four different types of investigation. They are not just asking what the law says; they are looking at what actually happens in the real world. The team is analyzing millions of pages of insurance records to see how many people are actually getting follow-up care and how quickly they return to the hospital. They are also asking patients and their families to describe their own experiences, asking if they felt supported or abandoned during the transition. To get a deeper understanding of the most difficult cases, they are sitting down for long conversations with people who face extra challenges, such as those experiencing homelessness or young people dealing with their first severe psychotic episode. Finally, they are surveying the doctors, nurses, and social workers who do the actual work of coordinating these discharges to hear about the barriers they face daily.
The study is built on a massive foundation of data. The researchers are examining the records of approximately 121,000 people who were treated in psychiatric hospitals or day clinics between 2022 and 2023. These records come from a single major health insurance provider, which covers millions of people across the country. By looking at this data, the team can track exactly when a patient leaves the hospital and when they see a doctor next. They are counting how many people return to the hospital within 30 days and how many within a full year. They are also measuring how long it takes for a patient to make their first appointment with an outpatient provider, such as a psychiatrist or a therapist. This part of the study relies on hard numbers to show the big trends: are people getting the help they need, and is the system preventing them from getting sick again?
To understand the human side of these numbers, the researchers are reaching out to 1,200 patients and their relatives. These individuals are being asked to fill out surveys about how they felt during the discharge process. Did the hospital explain things clearly? Did they feel safe leaving? The researchers are also linking these personal stories to the official insurance records. This allows them to see if a patient's feeling of being well-supported matches the reality of their medical outcomes, such as whether they actually kept their follow-up appointments. This connection between what people feel and what the data shows is a key strength of the project, offering a view that neither numbers nor stories could provide on their own.
For those in the most precarious situations, the study goes even deeper. The researchers are conducting detailed interviews with 28 individuals who belong to specific high-risk groups. These include people with severe mental illness and substance use disorders, those who are homeless or at risk of becoming so, older adults who need significant care, and young people experiencing their first episode of psychosis. These conversations take place four to eight weeks after the patient leaves the hospital, a time when the initial shock of discharge has worn off and the reality of daily life has set in. The goal is to hear the unfiltered stories of what helped them and what stopped them from getting the care they needed. These interviews are not meant to represent every single patient, but to uncover the deep, structural problems that might be invisible in a large survey.
The final piece of the puzzle involves the people on the front lines of the healthcare system. The team is surveying over 1,000 healthcare providers, including doctors, nurses, social workers, and therapists in both hospitals and private practices. They are asking these professionals about the practical difficulties of coordinating care. They want to know if there are enough appointments available, if different sectors of the healthcare system talk to each other effectively, and what specific rules or lack of resources make their jobs harder. By gathering these perspectives, the researchers hope to identify the exact bottlenecks that prevent a smooth transition from inpatient to outpatient care.
This project is a work in progress, and the researchers are still in the phase of collecting and analyzing information. They have not yet published the final results or declared a specific solution. Instead, the goal is to build a comprehensive evidence base that shows exactly where the current system succeeds and where it fails. The findings will be used to create practical guides for hospitals and to suggest changes to national policies. By understanding the specific needs of vulnerable groups and the real-world constraints faced by providers, the project aims to help refine the legal framework for discharge management. The ultimate hope is that these insights will lead to a system where the transition from hospital to home is no longer a moment of high risk, but a supported step toward recovery.
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