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Table 2 Patient characteristics

From: Who breaches the four-hour emergency department wait time target? A retrospective analysis of 374,000 emergency department attendances between 2008 and 2013 at a type 1 emergency department in England

Characteristics Percent (n = 374,459)
Age at ED arrival 31 (17, 56)a
 0–4 11.7
 5–17 13.3
 18–30 23.7
 31–64 32.0
 65–79 9.7
 80+ 9.1
Time of ED Arrival
 08:00 to 19:59 67.0
 20:00 to 07:59 33.0
Source of Referral
 Self-referral 43.8
 Other sourcesb 56.2
Number of attendances in the previous financial year 1 (1, 2)a
Number of investigation types 1 (0, 2)a
Investigation categories
 No investigations orderedc 39.3
 Point of care only 3.4
 Laboratory tests and point of care 15.2
 Simple imaging, laboratory tests, point of care 34.9
 Complex imaging, simple imaging, laboratory tests, point of care 7.2
Median length of time spent in ED 2 h 59 m (1 h 55 m, 3 h 49 m)a,c
Patients exceeding the four-hour ED wait target 9.2
  1. ED emergency department
  2. aMedian and interquartile range
  3. bOther types of referral include: emergency services, general medical practitioner, dental practitioners, dental practices, community dental services, police, work, educational establishments, and local authority social services
  4. ch = hours, m = minutes