Mean (SD) | Range | Mean (SD)% predicted | |
---|---|---|---|
BMI, body mass index; FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity; Tlco, single breath lung carbon monoxide transfer factor; Tl/Va, transfer factor corrected for alveolar volume. | |||
Age (years) | 70 (12) | 52–86 | – |
70 (9) | 58–89 | ||
BMI | 27.1 (4.1) | 20.8–35.4 | – |
25.4 (4.9) | 16.5–30.9 | ||
FEV1 (l) | 1.83 (0.55) | 1.30–3.01 | 79 (31) |
1.21 (0.41) | 0.65–1.76 | 45 (13) | |
FVC (l) | 2.33 (0.78) | 1.54–4.21 | 77 (27) |
2.85 (0.76) | 1.61–3.85 | 83 (16) | |
FEV1/FVC (%) | 80 (8) | 67–94 | – |
42 (9) | 31–56 | ||
Tlco (mmol/kPa/min) | 3.5 (0.9) | 1.8–5.0 | 45 (9) |
3.8 (1.0) | 2.2–5.0 | 49 (14) | |
Tl/Va (mmol/kPa/min/l) | 1.08 (0.35) | 0.72–2.01 | 61 (18) |
0.83 (0.24) | 0.45–1.28 | 50 (14) |