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Table 3 Comparison of the usage of antibiotics

From: Procalcitonin guided antibiotic therapy of acute exacerbations of asthma: a randomized controlled trial

  Usage of antibiotics, (%) χ2 pvalue
  PCT group Control group   
Mild 16/47 (34.0) 37/50 (74.0) 15.61 <0.01
Moderate 21/54 (38.9) 36/52 (69.2) 9.81 <0.01
Severe 13/17 (76.5) 14/17 (82.4) 0.18 = 0.671
Critical 9/10 (90.0) 8/8 (100.0) 0.85 = 0.357
Total 59/128 (46.1) 95/127 (74.8) 21.97 <0.01