LABA (−) | LABA (+) | ||
---|---|---|---|
N | 246 | 246 | P |
Age (year) | 66.7 ± 5.0 | 66.8 ± 5.3 | 0.732 |
Sex (female) | 86 (35.0%) | 85 (34.6%) | 0.925 |
Race (not white) | 10 (4.1%) | 12 (4.9%) | 0.663 |
Annual income < 30000 $ | 125 (50.8%) | 123 (50.0%) | 0.857 |
FEV1 (%predicted) | 26.5 ± 6.8 | 26.6 ± 6.8 | 0.991 |
[FEV1 (mL)] | 766 ± 222 | 777 ± 242 | 0.866 |
[FEV1/FVC (%)] | 31.0 ± 6.0 | 31.2 ± 6.3 | 0.926 |
FVC (%predicted) | 67.1 ± 15.4 | 67.0 ± 15.0 | 0.849 |
[FVC (mL)] | 2527 ± 757 | 2556 ± 802 | 0.772 |
Forced residual capacity (mL) | 6072 ± 1330 | 6040 ± 1306 | 0.842 |
Hb adjusted DLCO | 7.9 ± 2.9 | 8.1 ± 3.2 | 0.632 |
[Peak pulmonary arterial pressure(mmHg)] | 34.0 ± 6.0 | 33.3 ± 6.2 | 0.202 |
Hemoglobin (g/dL) | 14.4 ± 1.2 | 14.4 ± 1.3 | 0.626 |
PaO2 (mmHg) | 64.2 ± 10.0 | 64.2 ± 10.2 | 0.829 |
PaCO2 (mmHg) | 43.1 ± 5.8 | 43.0 ± 5.4 | 0.972 |
[Area of emphysema (%)] | 16.3 ± 11.1 | 16.0 ± 9.5 | 0.759 |
Body mass index (kg/m^2) | 24.7 ± 3.5 | 24.7 ± 3.6 | 0.860 |
Six-minute walk distance (m) | 366 ± 93 | 371 ± 98 | 0.577 |
St. George respiratory questionnaire | 53.4 ± 12.5 | 53.3 ± 12.6 | 0.974 |
Shortness of breath questionnaire | 63.0 ± 17.9 | 63.0 ± 19.0 | 0.961 |
Beck depression inventory | 9.1 ± 5.8 | 9.0 ± 5.8 | 0.988 |
Recent emergency visit | 33 (13.4%) | 30 (12.2%) | 0.686 |
Recent hospital stay | 19 (7.7%) | 17 (6.9%) | 0.729 |
LTOT during sleep | 173 (70.3%) | 170 (69.1%) | 0.769 |
LTOT on exertion | 191 (77.6%) | 191 (77.6%) | 1.000 |
Oral corticoid | 70 (28.5%) | 62 (25.2%) | 0.416 |
Inhaled corticosteroid | 186 (75.6%) | 186 (75.6%) | 1.000 |
Short-acting beta-agonist | 219 (89.0%) | 217 (88.2%) | 0.777 |
Anticholinergic agent | 205 (83.3%) | 203 (82.5%) | 0.811 |
Theophylline | 103 (41.9%) | 94 (38.2%) | 0.408 |
Diuretics | 34 (13.8%) | 38 (15.4%) | 0.610 |