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Table 1 Subject characteristics

From: Data reduction for cough studies using distribution of audio frequency content

  Whole Group Healthy/Healthy Smoker Asthma Chronic Cough COPD
N (female) 20 (10) 5 (3) 5 (3) 5 (3) 5(1)
Age (SD) 57.4 yrs (±10.9) 54.0 yrs (±10.5) 57.4 yrs (±4.4) 50.4 yrs (±14.4) 67.6 yrs (±4.0)
Current Smokers 3 3 0 0 0
Smoking Historypack yearsmedian (range) 3.5 (0-40) 7.5 (0-29) 0 (0-5) 0 (0-2) 30 (28-40)
FEV 1 % predicted (SD) 86.1% (±27.3) 98.7% (±9.6) 102.2% (±11.8) 99.5% (±12.3) 44.1% (±14.0)
FEV1/FVC % ratio (SD) 66.3% (±15.6) 70.8% (±7.0) 73.6% (±4.5) 76.4% (±4.7) 44.4% (±15.5)
  1. FEV1 = forced expiratory volume in 1 second; FVC = forced vital capacity.