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Table 1 Patient characteristics

From: How do bacteraemic patients present to the emergency department and what is the diagnostic validity of the clinical parameters; temperature, C-reactive protein and systemic inflammatory response syndrome?

Characteristics   Blood cultured
Total n = 11.988 Not blood-cultured n = 6.489* Non-bacteraemic patients n = 5.081* Bacteraemic patients n = 418*
Age, median 66 years (range 15–103)     
- 15–64 5799 3442 (59.4) 2205 (38.0) 152 (2.6)
- 65–79 2974 1447 (48.7) 1384 (46.5) 143 (4.8)
- ≥ 80 3215 1600 (49.8) 1492 (46.4) 123 (3.8)
Sex     
- Male 5492 2861 (52.1) 2396 (43.6) 235 (4.3)
- Female 6496 3628 (55.8) 2685 (41.4) 183 (2.8)
Body temperature > 38.0 or < 36.0 C° 2479 336 (13.6) 1892 (76.3) 251 (10.1)
Heart rate ≥ 90 bpm 4530 1807 (39.9) 2473 (54.6) 250 (5.5)
Respiratory freq ≥ 20 breaths/minute 2750 848 (30.8) 1704 (62.0) 198 (7.2)
Bloodpressure ≤ 90 mmHg 322 119 (36.9) 159 (49.4) 44 (13.7)
Oxygen saturation ≤ 90% 565 177 (31.3) 349 (61.8) 39 (6.9)
PaO2 ≤ 10.0 kPa 1883 593 (31.5) 1164 (61.8) 126 (6.7)
Leukocyte count ≥ 12.0 or ≤ 4.0 × 109/L 3904 1370 (35.1) 2285 (58.5) 249 (6.4)
Neutrophil count ≥7.0 × 109/L or ≤ 2.0 × 109/L 6286 2633 (41.9) 3319 (52.8) 334 (5.3)
CRP ≥ 10 mg/dL 6596 2218 (33.6) 3990 (60.5) 388 (5.9)
CRP ≥ 100 mg/dL 2341 331 (14.2) 1733 (74.0) 277 (11.8)
Lactate ≥ 2.0 mmol/L 765 282 (36.9) 422 (55.1) 61 (8.0)
pH ≤ 7.35 482 173 (35.9) 289 (60.0) 20 (4.1)
Creatinine ≥ 177 μmol/L 868 369 (42.5) 424 (48.9) 75 (8.6)
SIRS     
No SIRS 8141 5518 (72.0) 2506 (32.7) 117 (1.5)
SIRS 3847 971 (25.3) 2575 (66.9) 301 (7.8)
Charlson Comorbidity Score     
- 0 5510 3252 (59.0) 2106 (38.2) 152 (2.8)
- 1 2649 1423 (53.7) 1135 (42.9) 91 (3.4)
- ≥2 3829 1814 (47.4) 1840 (48.0) 175 (4.6)
  1. Baseline characteristics of all adult first-time admissions to the Medical Emergency Department. Data based on initial vital values and standard blood samples. CRP: C-reactive protein. SIRS: Systemic Inflammatory Response Syndrome. *The percent is presented horizontally, and can be interpreted as the positive predictive value for the specific variable among the bacteraemic patients.