Variables | LDH | Pao2* | AaPo2* | |||
---|---|---|---|---|---|---|
Correlation coefficient | p value | Correlation coefficient | p value | Correlation coefficient | p value | |
LDH, lactate dehydrogenase; FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity; TLC, total lung capacity; Tlco, carbon monoxide transfer factor; HRCT, high resolution computed tomography. | ||||||
*Pao2 and AaPo2 were measured in the sitting position at room air. | ||||||
AaPo2 = Pao2 – Pao2; Pao2 = (barometric pressure − 47) × Fio2 − Paco2/0.8. | ||||||
FEV1 (% pred) | −0.10 | 0.775 | 0.24 | 0.426 | −0.38 | 0.197 |
FVC (% pred) | −0.17 | 0.571 | 0.35 | 0.247 | −0.47 | 0.108 |
TLC (% pred) | −0.39 | 0.190 | 0.51 | 0.078 | −0.51 | 0.076 |
Tlco (% pred) | −0.51 | 0.076 | 0.36 | 0.231 | −0.61 | 0.027 |
Radiographs | ||||||
Opacity score | 0.41 | 0.169 | −0.59 | 0.033 | 0.53 | 0.062 |
Extent score | 0.56 | 0.045 | −0.48 | 0.096 | 0.59 | 0.035 |
Severity score | 0.56 | 0.045 | −0.57 | 0.040 | 0.60 | 0.033 |
Chest HRCT | ||||||
Opacity score | 0.54 | 0.056 | −0.51 | 0.072 | 0.36 | 0.232 |
Extent score | 0.77 | 0.002 | −0.57 | 0.042 | 0.64 | 0.019 |
Severity score | 0.56 | 0.045 | −0.60 | 0.032 | 0.60 | 0.029 |
Reticulation score | 0.75 | 0.003 | −0.57 | 0.042 | 0.56 | 0.047 |