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Table 1 Baseline characteristics of the two groups

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

Characteristic PCT group (n = 128) Control group (n = 127)
Median age, yr 54±14 55±15
Mean Asthma history, yr 25±17 27±18
Gender, no. (%)   
  Male 64 (50.0) 59 (46.5)
  Female 64 (50.0) 68 (53.5)
HR, times/min 95±24 97±26
RR, times/min 24±12 25±10
pH 7.39±0.06 7.38±0.05
SaO2, %* 94±5 95±3
PaO2, mmHg* 79±19 75±17
PaCO2, mmHg* 44±12 42±10
WBC, ×109/L 12.1±4.6 11.9±5.2
hsCRP, mg/L 8.2 (4.5 ~ 15.7) 6.9 (5.1 ~ 17.6)
PCT, ng/ml 0.137 (0.068 ~ 0.252) 0.119 (0.057 ~ 0.267)
IL-6, pg/ml 14.5 (8.3 ~ 26.1) 17.3 (6.7 ~ 31.4)
TNF-α, pg/ml 27.5 (13.4 ~ 49.5) 32.4 (15.7 ~ 52.1)
Severity of asthma   
  Mild 47 (36.7) 50 (39.4)
  Moderate 54 (42.2) 52 (40.9)
  Severe 17 (13.3) 17 (13.4)
  Critical 10 (7.8) 8 (6.3)
FEV1, % 57.8±17.2 54.3±16.7
Mean symptom score 4.42±0.85 4.35±0.79
  1. Note: Data are presented as No. (%), M (QL ~ QU) or mean ± SD; * = the value after oxygen.