Role of the Emphysema Index Combined with the Chronic Obstructive Pulmonary Disease Assessment Test Score in the Evaluation of Chronic Obstructive Pulmonary Disease
Table 1
Basic characteristics of the included patients.
Variables
CB (n = 92)
COPD (n = 277)
x2/t
Sex, n (%)
7.970
0.005
Male
69 (75.0)
242 (87.4)
Female
23 (25.0)
35 (12.6)
Age (years)
70.7 ± 10.0
67.4 ± 10.3
2.671
0.008
COPD education, n (%)
0.081
0.777
Yes
35 (38.0)
110 (39.7)
No
57 (62.0)
167 (60.3)
BMI (kg/m2)
24.2 (22.1, 26.0)
23.7 (20.5, 26.4)
1.285
0.199
Smoking (pack-years)
30.0 (20.0, 40.0)
40.0 (21.9, 50.0)
−2.573
0.010
mMRC, n (%)
3.835
0.429
0
28 (30.4)
76 (27.4)
1
29 (31.5)
84 (30.3)
2
24 (26.1)
60 (21.7)
3
9 (9.8)
50 (18.1)
4
2 (2.2)
7 (2.5)
WBC (× 109/L)
5.91 (4.73, 6.92)
6.76 (5.43, 8.55)
−4.032
<0.001
N (%)
65.2 (57.3, 73.6)
72.7 (64.3, 79.4)
−4.693
<0.001
E (%)
2.20 (1.00, 3.76)
1.50 (0.50, 3.00)
−2.769
0.006
PaO2 (mmHg)
83.0 (71.5, 89.5)
75.0 (65.5, 85.0)
−2.713
0.007
PaCO2 (mmHg)
37.0 (35.0, 41.0)
42.0 (37.0, 47.0)
−4.765
<0.001
FEV1 (L)
2.01± 0.65
1.32 ± 0.52
10.336
<0.001
FEV1/FVC (L)
78.4 ± 6.2
53.3 ± 9.8
28.829
<0.001
COPD = chronic obstructive pulmonary disease, CB = chronic bronchitis, BMI = body mass index, mMRC = modified Medical Research Council, WBC = white blood cell count, N = neutrophil count, E = eosinophil count, and Pa = partial pressure.
