Broca-Katsura index (%)

0 to <20

20 to <40

40 to <60

Group

A

B

C

Number

208

127

38

Age (yrs)

43.1 ± 14.8

46.0 ± 13.5

44.4 ± 14.4

Height (cm)

163.7 ± 8.8

160.2 ± 9.0

159.6 ± 9.7

Weight (kg)

58.5 ± 9.9

70.1 ± 10.2*

78.4 ± 11.7*^,†

%FVC (%)

112.5 ± 15.6

109.0 ± 4.1

108.3 ± 1.4

FEV_1.0% (%)

82.4 ± 5.9

82.2 ± 6.1

83.1 ± 2.2

a-ETCO₂ (mmHg)

2.2 ± 3.1

3.3 ± 3.1*

5.5 ± 5.0*^,†