Related Experiment Video
Updated: Feb 12, 2026

Detection of Histone Modifications in Plant Leaves
Published on: September 23, 2011
Children Who Leave the Emergency Department Without Being Seen: Why Did They Leave and What Would Make Them Stay?
Rodrigo Sousa1, Cátia Correia2, Rita Valsassina3
1Departamento de Pediatria. Hospital Beatriz Ângelo. Loures.
Insights
Excessive waiting times in emergency departments cause children to leave without being seen. However, most children who leave do not experience adverse outcomes, suggesting low-acuity cases.
Area of Science:
- Pediatric Emergency Medicine
- Healthcare Access and Quality
Background:
- Children leaving emergency departments without being seen (LWBS) is a complex issue.
- Understanding the reasons and outcomes for LWBS is crucial for improving pediatric emergency care.
Purpose of the Study:
- To compare sociodemographic characteristics of children who left without being seen versus those who did not.
- To evaluate parental reasoning, subsequent medical care utilization, and patient outcomes for LWBS cases.
Main Methods:
- Prospective case-control study design.
- Random sampling of LWBS children and matched controls from an emergency department over three months.
- Phone questionnaire to gather data on reasons for leaving, outcomes, and feedback.
Main Results:
- 0.5% of pediatric emergency department patients (92/18,200) left without being seen.
- Primary reasons for leaving were excessive waiting time (92.7%) and the problem could wait (21.8%).
- LWBS patients were significantly more likely to seek further medical care (78.2% vs. 11%) but did not have worse outcomes.
Conclusions:
- Excessive waiting time is the main driver for pediatric LWBS.
- Low rates of adverse outcomes suggest many LWBS patients present with low-acuity conditions.
- Strategies to reduce waiting times may decrease LWBS rates, and concerns about clinical outcomes may be overstated.
Introduction:
Children who visit emergency departments and leave without being seen represent a multifactorial problem. We aimed to compare the sociodemographic characteristics of children who left and of those who did not leave, as well as to evaluate parental reasoning, subsequent use of medical care and patient outcome.
Material And Methods:
This was a prospective case-control study of a random sample of children who left without being seen and their matched controls from an emergency department during a three-month period. We performed a phone questionnaire to obtain information concerning reasons for leaving, patient outcomes and general feedback.
Results:
During the study period, 18 200 patients presented to the emergency department, of whom 92 (0.5%) left without being seen. Fifty-five (59.8%) completed the questionnaire and there were 82 controls. The most common reasons for leaving were 'excessive waiting time' (92.7%) and 'problem could wait' (21.8%). A significantly higher number of patients who left sought further medical care (78.2% vs 11%) but they did not experience higher levels of unfavourable outcomes.
Discussion:
The waiting time seems to be the major factor that drives the decision to leave. The fact that parents felt safe in leaving and the low level of adverse outcomes highlights the low-acuity nature of the majority of patients who leave.
Conclusion:
Reducing the waiting times may be the logical strategic mean to decrease the rates of patients who leave without being seen. However, our data seems to indicate that the concerns surrounding clinical outcome after leaving may be partly unwarranted.
Related Concept Videos
Leaving Groups
In general, in a nucleophilic substitution reaction, a nucleophile displaces a functional group, called the leaving group, from the substrate to give a substituted product. A leaving group departs the substrate molecule through heterolytic cleavage, taking the pair of electrons with it to become a relatively stable weak base in the form of an anion or a neutral molecule.
In a...
Basic Plant Anatomy: Roots, Stems, and Leaves
Emerging Adulthood
Introduction Cardiac Emergencies
Applications of GIS: Disaster Management and Emergency Response
Drug Dosing: Infants and Children

