Table 1 Characteristics of all subjects analyzed in the present study
From: The use of exhaled air analysis in discriminating interstitial lung diseases: a pilot study
| Â | Controls | IPF patients | CTD-ILD patients | Significance Ctrls vs. IPF | Significance Ctrls vs. CTD-ILD | Significance IPF vs. CTD-ILD |
|---|---|---|---|---|---|---|
Number of subjects | 51 | 53 | 51 | ns | ns | Ns |
Age (yrs. ± STD) | 53 (± 10) | 69 (± 9) | 57 (± 12) | 5.8*10–6 | ns | 1*10–6 |
% male | 68 | 75 | 26 | ns | 0.002 | 1.63*10–6 |
% smokers ex/current | 35/16 | 60/0 | 24/4 | Â | Â | 0.02 |
mMRC class 0 | 44 | 5 | 5 | Â | Â | ns |
mMRC class 1 | 7 | 29 | 22 | Â | Â | ns |
mMRC class 2 | 0 | 12 | 16 | Â | Â | ns |
mMRC class 3 | 0 | 6 | 5 | Â | Â | ns |
mMRC class 4 | 0 | 1 | 3 | Â | Â | ns |
VC (% ± STD) | NA | 77 (± 22) | 78 (± 23) |  |  | ns |
TLC (% ± STD) | NA | 71 (± 15) | 76 (± 15) |  |  | ns |
FRC (% ± STD) | NA | 74 (± 17) | 78 (± 15) | ns | ns | 0.001 |
FEV1 (% ± STD) | NA | 80 (± 22) | 78 (± 25) | ns | ns | 0.0008 |
DLCO (% ± STD) | NA | 49 (± 17) | 49 (± 17) | ns | ns | 0.03 |
PaO2 (± STD mm Hg) | NA | 75 (± 9) | 80 (± 12) |  |  | ns |
PaC02 (± STD mm Hg) | NA | 41 (± 4) | 39 (± 4) |  |  | ns |
6MWD (% ± STD) | NA | 88 (± 20) | 78 (± 20) |  |  | ns |