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Table 4 Accuracy of risk assessment, derived from the National Early Warning Score (NEWS), % of cases (number of cases)

From: Medical priority dispatch codes—comparison with National Early Warning Score

  Correct Under-triage Over-triage Total
All missions 67.5 (8589) 9.2 (1166) 23.4 (2974) 100.0 (12729)
A priority 23.1 (142) - 76.9 (474)a 100.0 (616)
B priority 13.9 (445) 7.8 (248)b 78.3 (2500)b 100.0 (3193)
C priority 87.5 (4933) 12.5 (704)c - 100.0 (5637)
D priority 93.5 (3069 6.5 (214)d - 100.0 (3283)
Male 65.2 (4090) 10.0 (627) 24.8 (1558) 100.0 (6275)
Female 69.7 (4461) 8.4 (537) 21.9 (1399) 100.0 (6397)
16–64 years 66.0 (3615) 7.0 (383) 27.0 (1477) 100.0 (5475)
65–74 years 67.7 (1313) 11.2 (218) 21.1 (409) 100.0 (1940)
75–84 years 69.6 (2160) 10.3 (319) 20.1 (623) 100.0 (3102)
85+ years 67.9 (1501) 11.1 (246) 21.0 (465) 100.0 (2212)
00:00–08:00 67.7 (1933) 8.8 (250) 23.5 (671) 100.0 (2854)
08:00–16:00 67.4 (3567) 9.5 (501) 23.1 (1223) 100.0 (5291)
16:00–24:00 67.5 (3081) 9.1 (414) 23.5 (1072) 100.0 (4567)
  1. a108 NEWS medium and 366 NEWS low missions regarded as over-triage
  2. b248 NEWS high missions regarded as under-triage and 2500 NEWS low missions regarded as over-triage
  3. c150 NEWS high and 554 NEWS medium missions regarded as under-triage
  4. d33 NEWS high and 181 NEWS medium missions regarded as under-triage