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Table 5 Comparison of different parameters between patients with bacterial and non-bacterial febrile illness presenting with a C-reactive protein concentration less than 100 mg/L

From: C-reactive protein velocity to distinguish febrile bacterial infections from non-bacterial febrile illnesses in the emergency department

  Variable Duration of fever (hours) CRP (mg/L) CRP-velocity (mg/L/hour) WBC (103/ml3) Neutrophils (103/ml3)
Bacterial
(n = 59)
Mean 27.2 30.58 2.6 13.1 11.0
  Interquartile range 4.0 to 24.5 18.6 to 80.6 1.1 to 6.0 8.4 to 16.6 6.79 to 14.87
Non-bacterial
(n = 63)
Mean 67.7 12.16 0.35 8.3 5.7
  Interquartile range 17 to 88 8.3 to 36.8 0.16 to 1.04 5.9 to 9.9 3.5 to 7.3
P value   < 0.001 < 0.001 < 0.001 < 0.001 < 0.001
  1. CRP = C-reactive protein; WBC = white blood cells.