Table 1.
Demographics of COPD patients
| Characteristics | All patients (n = 2002) | Males (n = 1134) (57%) | Females (n = 868) (43%) | |||
|---|---|---|---|---|---|---|
| Age, yrs |
66.9 |
(9.5) |
69.0 |
(9.1) |
64.3 |
(9.2)* |
| Weight, kg |
71.9 |
(16.5) |
77.2 |
(15.9) |
65.0 |
(14.7)* |
| Height, m |
1.68 |
(0.9) |
1.73 |
(0.7) |
1.62 |
(0.6)* |
| BMI, kg/m2 |
25.4 |
(5.2) |
25.8 |
(4.9) |
25.0 |
(5.5)* |
| FFMI, kg/m2 |
17.0 |
(2.4) |
18.1 |
(2.2) |
15.5 |
(1.8)* |
| FEV1, % predicted |
48.2 |
(23.2) |
47.2 |
(20.7) |
49.6 |
(26.1)* |
| FVC, % predicted |
95.9 |
(22.3) |
93.0 |
(21.7) |
99.7 |
(22.7)* |
| FEV1/FVC, r |
39.8 |
(11.8) |
38.9 |
(11.9) |
40.9 |
(11.4)* |
| FRC, % predicted |
150.1 |
(35.9) |
146.3 |
(37.5) |
154.9 |
(33.0)* |
| DLCO, % predicted |
52.9 |
(18.1) |
55.3 |
(30.1) |
50.9 |
(25.7)* |
| PO2, kPa |
9.8 |
(2.3) |
9.8 |
(2.2) |
9.7 |
(2.4) |
| PCO2, kPa |
5.3 |
(1.4) |
5.2 |
(1.2) |
5.4 |
(1.5) |
| MRC dyspnea grade |
3.3 |
(1.1) |
3.3 |
(1.1) |
3.4 |
(1.0) |
| GOLD stage I |
96 |
(4.8) |
48 |
(4.2) |
48 |
(5.5) |
| GOLD stage II |
649 |
(32.4) |
362 |
(31.9) |
287 |
(33.1) |
| GOLD stage III |
730 |
(36.5) |
419 |
(36.9) |
311 |
(35.8) |
| GOLD stage IV |
527 |
(26.3) |
305 |
(26.9) |
222 |
(25.6) |
| Receiving LTOT, n, (%) | 408 | (20.4) | 230 | (20.3) | 178 | (20.5) |
Average values are shown for exercise tests and clinical parameters. The values are reported for the entire cohort and then for men and women. Asterisk denotes significant differences (p < 0.05).