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Table 5 Case fatality risk for patients in the indicated Danish Index emergency level groups

From: Implementing a nationwide criteria-based emergency medical dispatch system: A register-based follow-up study

No. 0–24 h (95% CI) 0–48 h (95% CI) 30-day (95% CI)
A    28,630 4.4 (4.13-4.60) 5.1 (4,87-5,39) 8.6 (8.28-8.94)
B    25,419 0.3(0.23-0.37) 0.6 (0.47-0.66) 3.3 (3.09-3.55)
C    1,112 0.4 (0.15-1.05) 0.5 (0.20-1.17) 3.3 (2.35-4.56)
D     109 0 (0–3.32)* 0 (0–3.32)* 0.9 (0.02-5.0)
RR A vs. B-D 14.3 (11.5-17.98) 9.2 (7.80-10.92) 2.6 (2.42-2.81)
All 55,270 2.4 (2.28-2.54) 2.9 (2.78-3.07) 6.1 (5.85-6.25)
  1. *One-sided, 97.5% confidence interval.
  2. Case fatality risk for patients in the indicated Danish Index emergency level groups and the relative risk (RR) of dying for group A patients compared to group B, C and D patients combined. Analysis based on 55.270 patients with Danish Index code and civil registration number registered (a prerequisite for follow-up data from national registries).