Table 1 Characteristics of the study population (100 volunteers).

From: Comparison of inspiratory and expiratory lung and lobe volumes among supine, standing, and sitting positions using conventional and upright CT

Demographic variables

Value

Mean ± SD or n

Range

Age (years)

47.1 ± 11.4

30‒79

Sex (female/male) (n)

69/31

 

Height (cm)

161.2 ± 9.0

141.4‒187.5

Weight (kg)

57.6 ± 12.1

37.8‒106.8

Body mass index (kg/m2)

22.1 ± 3.6

15.7‒33.7

Pulmonary function test

 VC (L)

3.63 ± 0.91

1.79‒6.13

 FVC (L)

3.56 ± 0.91

1.79‒5.98

 VC (% predicted)

105.4 ± 10.4

81.6‒138.9

 FEV1 (L)

2.86 ± 0.74

1.37‒4.61

 FEV1 (% predicted)

101.9 ± 12.2

71.1‒133.5

 FEV1/FVC (%)

80.6 ± 7.5

55.5‒96.0

 Tidal volume (L)

0.57 ± 0.17

0.29‒1.06

 Residual volume (L)

1.51 ± 0.38

0.80‒2.92

 Residual volume (% predicted)

126.3 ± 32.2

48.9‒212.6

 Functional residual capacity (L)

2.91 ± 0.70

1.36‒4.86

 Functional residual capacity (% predicted)

108.2 ± 18.5

62.5‒156.3

 Total lung capacity (L)

5.13 ± 1.17

2.65‒8.22

 Total lung capacity (% predicted)

111.4 ± 13.1

77.6‒157.0

 DLCO (mL/min/Torr)

22.4 ± 5.7

10.6‒38.2

  1. SD, standard deviation; FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity; VC, vital capacity; DLCO, diffusing capacity of the lung for carbon monoxide.
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