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Table 3 Estimated crude and adjusted (by sex and age) 1-day mortality rates per 1 and per 100,000 person years with 95% CI for the top five Danish Index criteria

From: Which symptoms pose the highest risk in patients calling for an ambulance? A population-based cohort study from Denmark

Danish Index Criteria 1-day mortality Per person year 1-day mortality Per 100,000-person year
Crude Adjusted Crude Adjusted
IR(95%CI) IR(95%CI) IR(95%CI) IR(95%CI)
Unconscious adult/ possible cardiac arrest 157.82(151.07–164.86) 21.55(17.73–26.21) 26.75(25.6–27,9) 3.65(3.01–4,44)
Breathing difficulties 18.81(16.89–20.94) 2.69(2.20–3.30) 3,18(2.86–3.55) 0.45(0.37–0.56)
Unclear problem 11.53(10.29–12.91) 1.78(1.47–2.17) 1.95(1.74–2.19) 0.30(0.25–0.36)
Possible stroke 5.65(4.77–6.68) 0.79(0.62–1.00) 0.96(0.81–1.13) 0.13(0.11–0.17)
Chest pain 2.52(2.03–3.12) 0.39(0.30–0.51) 0.43(0.34–0.53) 0.07(0.05–0.09)