Table 1.
Baseline characteristics of patients according to GOLD category
| Stage 0 n = 19 | Stage 1 n = 9 | Stage 2 n = 21 | Stage 3 n = 4 | Stage 4 n = 3 | |
| FEV1 (L) | 2.54 (0.49) | 2.06 (0.41) | 1.57 (0.43) | 0.96 (0.17) | 0.73 (0.13) |
| FEV1 (%pred) | 101.6 (10.1) | 89.1 (11.2) | 63.2 (10.3) | 40.2 (7.4) | 27.5 (2.3) |
| FVC (L) | 3.39 (0.69) | 3.61 (0.70) | 3.38 (1.12) | 3.17 (1.07) | 2.83 (0.49) |
| FVC (%pred) | 108.8 (9.6) | 127.1 (22.2) | 102.3 (20.4) | 104.5 (14.0) | 81.9 (16.4) |
| FEV1/FVC (%) | 75.4 (6.0) | 57.2 (4.5) | 48.3 (10.0) | 32.6 (9.5) | 26.7 (7.6) |
| RV (L) | 1.93 (0.41) | 2.69 (0.56) | 3.40 (0.92) | 3.46 (1.02) | 4.63 (1.06) |
| RV (%pred) | 92.3 (12.7) | 130.3 (24.6) | 156.2 (36.5) | 171.5 (34.2) | 194.0 (40.5) |
| TLC (L) | 5.44 (1.04) | 6.25 (0.99) | 6.59 (0.99) | 6.41 (2.05) | 7.01 (1.38) |
| TLC (%pred) | 98.9 (7.9) | 118.4 (12.9) | 117.0 (19.3) | 119.5 (17.6) | 113.7 (20.5) |
| TLCO (mmol/min/kPa) | 8.03 (2.10) | 7.00 (2.28) | 5.71 (2.09) | 2.92 (1.18) | 5.06 (1.43) |
| TLCO (%pred) | 100.5 (21.2) | 91.2 (24.3) | 72.0 (21.3) | 37.8 (14.8) | 62.0 (13.9) |
| KCO (mmol/min/kPa/L) | 1.60 (0.32) | 1.33 (0.38) | 1.14 (0.41) | 0.69 (0.33) | 1.14 (0.36) |
| KCO (%pred) | 110.3 (23.4) | 93.4 (31.6) | 81.4 (29.2) | 46.0 (20.9) | 86.7 (27.5) |
Figures represent the mean (standard deviation).