Overcrowding in psychiatric wards and physical assaults on staff: data-linked longitudinal study

Area of Science:

• Psychiatric Healthcare
• Hospital Management
• Occupational Safety

Background:

• Patient overcrowding and patient-to-staff violence are persistent challenges in psychiatric care.
• Existing evidence linking overcrowding to aggression is limited and inconclusive.

Purpose of the Study:

• To investigate the relationship between ward overcrowding and physical assaults on staff in acute psychiatric in-patient settings.
• To determine if increased bed occupancy correlates with increased patient aggression towards healthcare personnel.

Main Methods:

• A 5-month longitudinal study analyzed monthly bed occupancy and staff-reported violent incidents across 90 wards in 13 Finnish psychiatric hospitals.
• Data collected from 1098 healthcare employees, including physicians and nurses.
• Assaults on staff and ward property were the primary outcome measures.

Main Results:

• Overcrowding, defined as >10% excess bed occupancy, was prevalent, affecting 46% of staff.
• Excess bed occupancy significantly increased the risk of physical assaults on employees (OR=1.72, adult wards OR=3.04).
• No significant association was found between overcrowding and assaults on ward property.

Conclusions:

• Psychiatric hospital overcrowding is widespread and poses a tangible risk factor for workplace violence against staff.
• Findings underscore the importance of addressing overcrowding to enhance safety for psychiatric healthcare workers.