Table 1 Characteristics of included patients admitted to the emergency department in primary cohort (2010) and validation cohort (2013)
Primary cohort (n = 5371) | Validation cohort (n = 5738) | p-value | |
|---|---|---|---|
Age (median, IQR) | 63.8 [46.92–76.52] | 63.0 [46.0–76.0] | 0.21 |
Male gender (n, %) | 2578 (48.0) | 2835 (49.4) | 0.14 |
30-day mortality (n, %) | 284 (5.3) | 234 (4.1) | <0.01 |
48-h mortality (n, %) | 61 (1.1) | 50 (0.9) | 0.19 |
C-reactive protein, nmol/L (median, IQR) | 5.8 [1.7–29.17] | 4.9 [2.9–22.2] | <0.001 |
Potassium, mmol/L (median, IQR) | 4.1 [3.8–4.4] | 4.0 [3.9–4.3] | <0.001 |
Sodium, mmol/L (median, IQR) | 137.5 [135.0–139.4] | 139 [136.9–140.7] | <0.001 |
Haemoglobin, mmol/L (median, IQR) | 8.4 [7.6–9.1] | 8.4 [7.6–9.1] | 0.52 |
Creatinine, μmol/L (median, IQR) | 71.2 [59.0–87.0] | 71.0 [60.0–87.0] | 0.77 |
Leukocyte count, 109/L (median, IQR) | 8.7 [6.8–11.5] | 8.2 [6.5–10.6] | <0.001 |
Albumin, g/L (median, IQR) | 42.0 [38.6–44.7] | 37.2 [33.6–39.8] | <0.001 |
Lactate dehydrogenase, U/L (median, IQR) | 178.1 [153.3–213.6] | 182.2 [157.0–216.9] | 0.50 |
Arterial oxygen saturation, % (median, IQR) | 98 [96–99] | 98 [96–99] | 0.31 |
Respiratory rate, min−1 (median, IQR) | 16 [16–20] | 16 [15–19] | <0.001 |
Heart rate, min−1 (median, IQR) | 82 [71–95] | 80 [70–92] | <0.001 |
Systolic blood pressure, mmHg (median, IQR) | 140 [125–157] | 134 [119–150] | <0.001 |