Table 4

Sensitivity and specificity for cut-off points of MEWS

TimingCut-off points
012345
Prehospital (n=642)
  Sensitivity
  95% CI
100
(99.4 to 100)
94.3
(92.6 to 96.1)
72.9
(69.3 to 76.2)
62.9
(59.1 to 66.6)
52.9
(49.0 to 56.7)
38.6
(34.9 to 42.4)
  Specificity
  95% CI
0
(0 to 0.6)
20.6
(17.7 to 23.9)
53.1
(49.2 to 56.9)
69.1
(65.4 to 72.6)
79.9
(76.6 to 82.8)
88.6
(85.9 to 90.8)
Entrance (n=749)
  Sensitivity
  95% CI
100
(99.5 to 100)
96.5
(94.9 to 97.6)
79.1
(76.0 to 81.9)
64.0
(60.5 to 67.4)
46.5
(43.0 to 50.1)
34.9
(31.6 to 38.4)
  Specificity
  95% CI
0
(0 to 0.5)
16.4
(13.9 to 19.2)
47.1
(43.6 to 50.7)
70.1
(66.7 to 73.3)
85.5
(82.8 to 87.8)
92.2
(90.1 to 93.9)
After 1 hour (n=529)
  Sensitivity
  95% CI
100
(99.3 to 100)
95.8
(93.7 to 97.2)
74.6
(70.7 to 78.1)
57.7
(53.5 to 61.8)
39.4
(35.3 to 43.6)
32.4
(28.6 to 36.5)
  Specificity
  95% CI
0
(0 to 0.7)
10.9
(8.5 to 13.8)
41.3
(37.2 to 45.5)
70.1
(66.1 to 73.9)
86.0
(82.8 to 88.7)
94.8
(92.6 to 96.4)
After 3 hours (n=440)
  Sensitivity
  95% CI
100
(99.1 to 100)
94.7
(92.2 to 96.4)
82.7
(78.9 to 86.0)
61.3
(56.7 to 65.7)
42.7
(38.2 to 47.4)
33.3
(29.1 to 37-8)
  Specificity
  95% CI
0
(0 to 0.9)
11.5
(8.8 to 14.8)
42.2
(37.7 to 46.9)
70.7
(66.3 to 74.8)
84.9
(81.3 to 87.9)
93.4
(90.7 to 95.4)
  • MEWS, Modified Early Warning Score.