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Table 2 Risk prediction of outcomes in EMS RETTS-A triage levels

From: Pre-hospital triage performance and emergency medical services nurse’s field assessment in an unselected patient population attended to by the emergency medical services: a prospective observational study

  

High acuity

Low acuity

Red

Orange

Yellow

Green

nt

596

1588

1919

362

Time-sensitive condition

n

153

193

116

11

AR

25.7

12.2

6.04

3.01

RR

3.10

1.25

0.43

0.27

CI

[2.44,3.89]

[0.99,1.57]

[0.33,0.56]

[0.09,0.50]

Deviating VS/complication within 48 h

n

303

110

39

3

AR

50.8

6.92

2.03

0.83

RR

12.94

0.58

0.12

0.08

CI

[10.5,16.5]

[0.43,0.75]

[0.08,0.18]

[0.02,0.33]

Admission to in-patient care

n

483

866

826

112

AR

81.0

54.5

43.0

30.9

RR

1.74

1.10

0.75

0.58

CI

[1.62,1.86]

[1.02,1.19]

[0.69,0.81]

[0.47,0.71]

48 h mortality

n

22

18

4

0

AR

3.69

1.13

0.21

0

RR

6.49

1.25

0.13

0

CI

[2.93,14.75]

[0.52,2.81]

[0.03,0.50]

[0,0]

30-day mortality

n

73

80

50

6

AR

12.8

5.04

2.6

1.66

RR

3.48

1.12

0.42

0.34

CI

[2.41,4.88]

[0.78,1.60]

[0.27,0.62]

[0.05,0.74]

  1. nt Total number of patients per triage level, n number of patients, AR absolute risk %, RR relative risk, CI Bootstrapped 99% confidence intervals