AE group (n = 10)

non-AE group (n = 27)

p value

Ages (years)

74 ± 8

71 ± 7

0.236

Male/Female

9/1

22/5

0.903

Smoking index

1080 ± 620

957 ± 637

0.602

Serum markers

WBC(/μl)

7110 ± 1314

6911 ± 1641

0.733

LDH (IU/l)

218 ± 56

201 ± 52

0.381

CRP (mg/dl)

1.0 ± 2.4

0.8 ± 1.5

0.757

KL-6 (U/ml)

802 ± 549

682 ± 299

0.449

SP-D(ng/ml)

137 ± 88

140 ± 106

0.964

Pulmonary function test

%VC (%)

99 ± 22

95 ± 17

0.571

FEV1(L)

2.2 ± 0.5

2.1 ± 0.4

0.886

FEV1% (%)

72 ± 11

75 ± 10

0.501

Blood gas analysis

PaO₂ (Torr)

89 ± 14

86 ± 9

0.358

AaDO₂ (Torr)

14 ± 11

15 ± 10

0.813