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Table 2 Low MR-proADM concentrations resulted in an absence of ICU admission or 28-day mortality, despite lower antibiotic administration rates and a significantly longer time to administration, irrespective of corresponding PCT concentration

From: Biomarkers to guide antibiotic timing and administration in infected patients presenting to the emergency department

Patient subgroups

MR-proADM concentration

< 1.27 (nmol/L)

≥ 1.27 (nmol/L)

Subgroup 1: PCT concentration: < 0.25 μg/L (N = 106)

 Patients (N)

65

41

 Antibiotic administration (N, %)

35 (53.8%)

34 (82.9%)

 Time to antibiotic administration (min) (median, Q1-Q3)

127 [45.0–220]

42 [25.8–116]

 Composite of 28-day mortality and ICU admission (N, %)

0 (0.0%)

7 (17.1%)

Subgroup 2: PCT concentration: ≥ 0.25 and < 0.50 μg/L (N = 24)

 Patients (N)

8

16

 Antibiotic administration (N, %)

7 (87.5%)

15 (93.8%)

 Time to antibiotic administration (min) (median, Q1–Q3)

165 [88–305]

50 [19.3–186]

 Composite of 28-day mortality and ICU admission (N, %)

0 (0.0%)

1 (6.3%)

Subgroup 3: PCT concentration: ≥ 0.50 μg/L (N = 83)

 Patients (N)

21

62

 Antibiotic administration (N, %)

15 (71.4%)

59 (95.2%)

 Time to antibiotic administration (min) (median, Q1–Q3)

131 [92.8–166]

45 [26–136.5]

 Composite of 28-day mortality and ICU admission (N, %)

0 (0.0%)

15 (24.2%)

  1. MR-proADM mid-regional proadrenomedullin, N number, PCT procalcitonin, Q quartile