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Table 7 Studies on how the assessment of the urgency of need to see a physician according to different triage systems could predict hospitalization.

From: Emergency Department Triage Scales and Their Components: A Systematic Review of the Scientific Evidence

Author Year, reference Country Triage system Patient characteristics: Age Gender Outcome Results (Hospital admission frequency per triage level) Comments Study quality and relevance:
Van Gerven R et al
2001, [39]
The Netherlands
ATS 3 650 patients,
Age & sex not given
Hospital admission Triage level:
1: 85%
2: 71%
3: 48%
4: 18%
5: 17%
p < 0.0001
  Moderate
Chi CH et al
2006, [16]
Taiwan
ESI2 3 172 patients
47 years
47% female
Hospital admission Triage level:
1: 96%
2: 47%
3: 31%
4: 7%
5: 7%
p < 0.0001
- ESI scored in retrospect
- Unclear inclusion criteria
Moderate
Wuerz RC et al
2000, [40]
USA
ESI 493 patients
40 years
52% female
Hospital admission Triage level:
1: 92%
2: 61%
3: 36%
4: 10%
5: 0 %
p < 0.0001
- Unclear inclusion criteria Low
Dent A et al
1999, [35]
ATS 42 778 patients
Age & sex not given
Hospital admission Triage level:
1: 83%
2: 69%
3: 49%
4: 33%
5: 9%
p < 0.0001
  Moderate
Eitel DR et al
2003, [37]
USA
ESI2 1 042 patients
7 different EDs
43 years
47% female
Hospital admission Triage level:
1: 83%
2: 67%
3: 42%
4: 8%
5: 4%
p < 0.001
- Not consecutive patients Moderate
Tanabe P et al
2004, [38]
USA
ESI3 403 patients
45 years
49% female
Hospital admission Triage level:
1: 80%
2: 73%
3: 51%
4: 6%
5: 5%
p < 0.001
- Not consecutive patients
- Retrospective triage
Low
Wuerz RC et al
2001b, [41]
USA
ESI 8 251 patients
Age & sex not given
Hospital admission Triage level:
1: 92%
2: 65%
3: 35%
4: 6%
5: 2%
p < 0.001
- consecutive patients Moderate
Doherty S et al
2003, [36]
ATS 84 802 patients
Age & sex not given
Hospital admission Triage level:
1: 79%
2: 60%
3: 41%
4: 18%
5: 3.1%
p < 0.001
- consecutive patients Moderate
Maningas PA et al
2006, [6]
SRTS 33 850 patients
Age 30, 56% female
Hospital admission Triage level:
1: 43%
2: 30%
3: 13%
4: 3.0%
5: 1.4%
p < 0.0001
- consecutive patients Moderate
  1. Hospitalization figures (%) are shown for each triage level for patients admitted to a hospital emergency department.
  2. ATS = Australian Triage Scale; ESI = Emergency Severity Index; SRTS = Soterion Rapid Triage Scale.