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Table 1 Demographic and spirometric characteristics of study subjects

From: Relationship between CT air trapping criteria and lung function in small airway impairment quantification

Variables Mean Std
Age (y) 72,03 8,08
Height (cm) 162,14 8,93
Weight (kg) 67,05 11,54
BMI (Kg/m2) 25,53 3,49
FVC (l) 3,28 0,89
FVC (% predicted) 123,10 20,86
FEV1 (l) 2,37 0,64
FEV1 (% predicted) 89,31 17,02
FEV1/FVC 72,69 6,82
MEF (l) 2,84 1,14
MEF (% predicted) 110,09 40,98
TLC (l) 5,85 1,17
TLC (% predicted) 110,95 15,21
RV (l) 2,58 0,61
RV (% predicted) 117,13 26,21
FRC (l) 3,28 0,73
FRC (% predicted) 111,87 22,64
CV (l) 2,91 0,80
dN2 (% slope) 3,02 2,24
  1. Note. Data are means ± standard deviations for quantitative variables.Percentages are expressed as a ratio of measured to predicted values. FVC = forced vital capacity, FEV1 = forced expiratory volume in 1 second, MEF = mid forced expiratory flow, TLC = total lung capacity, RV = residual volume, FRC = functional residual capacity, CV = closing volume, dN2 = phase III nitrogen slope.