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Table 3 Baseline characteristics of the study subjects

From: Mechanical induction of cough in Idiopathic Pulmonary Fibrosis

  Control subjects IPF subjects  
  n = 30 n = 27 p Value
Age, years 65.6 (5.3) 71.7 (7) <0.001
Sex, male : female 21 : 9 17 : 10 0.589
Body Mass Index, kg/m2 26.3 ± 3.5 29.3 ± 4.6 0.007
Ever smoking: (% with ≥1 pack-year) 37 59 0.114
FEV1, % predicted 108.2 (10.9) 79.1 (18.5) <0.001
FVC, % predicted 120.6 (13.7) 80.4 (20.9) <0.001
DLCO ,% predicted 86.5 (11.9) 43.7 (12) <0.001
TLC, % predicted ND 61.9 (12)  
LDQ score, median (IQR) 0 (0-2) 2 (0-4) 0.06
Corticosteroid use, n (%) 0 (0) 9 (30) <0.001
  1. Data are presented as mean (SD) unless indicated otherwise
  2. Definition of abbreviations: IPF = idiopathic pulmonary fibrosis; FEV1 = forced expiratory volume in 1 s; FVC = forced vital capacity; DLCO = lung diffusion capacity for carbon monoxide; TLC = total lung capacity; ND = not determined; VAS = visual analogue scale; IQR = interquartile range; LDQ = Leeds dyspepsia questionnaire.