| |
Development set
|
Validation set
|
P value
|
|---|
|
n
|
108
|
46
| |
|
Age
|
64 (41–81)
|
65 (54–83)
|
0.62
|
|
Sex/male (%)
|
75 (69)
|
33 (72)
|
0.926
|
|
FEV1 (L)
|
1.54 (0.45–3.1)
|
1.63 (0.63–2.9)
|
0.424
|
|
FEV1%pred
|
58.12 (15.8–99.5)
|
62.38 (30.1–110.6)
|
0.263
|
|
FVC (L)
|
2.79 (0.98–5.21)
|
2.82 (0.92–4.75)
|
0.852
|
|
FVC% pred
|
80.14 (34.4–119.6)
|
82.72 (49.2–123.8)
|
0.671
|
|
FEV1/FVC
|
54.00 (31–68.59)
|
57.16 (32–68.98)
|
0.082
|
|
RV (L)
|
4.12 (1.97–7.31)
|
3.90 (1.34–6.43)
|
0.608
|
|
TLC (L)
|
6.55 (3.88–9.84)
|
6.14 (3.52–8.72)
|
0.316
|
|
RV/TLC (%)
|
75.58 (39–242.4)
|
68.53 (31–149.2)
|
0.522
|
|
BMI (kg/m2)
|
24.10 (11.3–37.3)
|
23.48 (17.2–30)
|
0.357
|
|
FFMI (kg/m2)
|
17.09 (9.5–23.8)
|
16.78 (11.8–19.3)
|
0.461
|
|
Height (cm)
|
165.42 (141–180)
|
165.40 (147–177)
|
0.991
|
|
Weight (Kg)
|
65.84 (26.7–110.4)
|
63.26 (40.2–90.3)
|
0.323
|
|
mMRC
|
2 (0–4)
|
2 (0–4)
|
0.599
|
|
CAT
|
15 (0–37)
|
14 (0–36)
|
0.804
|
|
RFthick (cm)
|
5.48 (4.51–6.97)
|
5.41 (4.5–6.96)
|
0.515
|
|
RFcsa (cm2)
|
7.06 (6.01–8.22)
|
7.03 (6.06–8.28)
|
0.78
|
|
6MWD (m)
|
370.8 (108–554)
|
365.9 (177–510)
|
0.721
|
|
QMS (kg)
|
42.89 (21.55–68.1)
|
42.94 (24.2–65.05)
|
0.986
|
- FEV1, Forced Expiratory Volume in the first second; FEV1% pred, FEV percentage predicted; FVC, forced vital capacity; FVC% pred, FVC percentage predicted; RV, residual volume; TLC, total lung capacity; BMI, body mass index; FFMI, fat-free mass index; CAT, COPD Assessment Test; 6MWD, 6-min walk distance; QMS, quadriceps muscle strength
