Table 1

 Lung function in 15 patients with interstitial lung disease (ILD) and 10 patients with chronic obstructive pulmonary disease (COPD)

Mean (SD)RangeMean (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
BMI27.1 (4.1)20.8–35.4
25.4 (4.9)16.5–30.9
FEV1 (l)1.83 (0.55)1.30–3.0179 (31)
1.21 (0.41)0.65–1.7645 (13)
FVC (l)2.33 (0.78)1.54–4.2177 (27)
2.85 (0.76)1.61–3.8583 (16)
FEV1/FVC (%)80 (8)67–94
42 (9)31–56
Tlco (mmol/kPa/min)3.5 (0.9)1.8–5.045 (9)
3.8 (1.0)2.2–5.049 (14)
Tl/Va (mmol/kPa/min/l)1.08 (0.35)0.72–2.0161 (18)
0.83 (0.24)0.45–1.2850 (14)