Trends and Hospital Factors in Emergency Department Patients Leaving Without Being Seen, 2015-2024
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By
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Lawrence Chang
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Jashdeep S. Dhillon
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Madeline Feldmeier
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Renee Y. Hsia
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May 21, 2026
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Clinical Scorecard: Patterns and Hospital Influences on Patients Departing from Emergency Departments Without Consultation, 2015-2024
At a Glance
| Category | Detail |
| Condition | Patients Leaving Without Being Seen (LWBS) |
| Key Mechanisms | ED crowding, hospital characteristics, and systemic healthcare strains |
| Target Population | Patients visiting emergency departments in California |
| Care Setting | Emergency Departments in nonfederal general acute care hospitals |
Key Highlights
- Overall LWBS rates decreased from 2.8% in 2015 to 2.2% in 2020, then increased to 3.4% in 2022 before decreasing to 2.6% in 2024.
- LWBS rates were significantly higher at urban (2.6%) vs rural (2.1%) hospitals.
- Government-owned hospitals had higher LWBS rates (3.9%) compared to for-profit hospitals (2.4%).
- Safety net hospitals exhibited higher LWBS rates (3.3%) compared to non-safety net hospitals (2.3%).
- Disparities in LWBS rates may impair equitable emergency care access.
Guideline-Based Recommendations
Diagnosis
- Monitor LWBS rates as an indicator of ED crowding and healthcare system performance.
Management
- Address systemic strains contributing to ED crowding to reduce LWBS rates.
Monitoring & Follow-up
- Utilize hospital characteristics (ownership, trauma center status) to assess LWBS performance.
Risks
- Increased LWBS rates may lead to adverse health outcomes due to delayed care.
Patient & Prescribing Data
Patients presenting to emergency departments in California
Consider hospital characteristics when evaluating LWBS rates and access to care.
Clinical Best Practices
- Implement strategies to reduce ED crowding and improve patient flow.
- Regularly review and analyze LWBS data to identify trends and disparities.
- Engage in community outreach to address barriers faced by underserved populations.
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