The Diagnostic Value of the Interstitial Biomarkers KL-6 and SP-D for the Degree of Fibrosis in Combined Pulmonary Fibrosis and Emphysema

Table 1

Clinical characteristics at diagnosis in CPFE patients.

Subjects, 𝑛	46
Gender, male/female	42/4
Age, years	67±8.7
Smoker (%)	100
Smoking status, current/former	20/26
Smoking history, pack years	58.8±33.9
PaO2 (Torr)	82.3±12.3
PaCO2 (Torr)	38.7±2.8
KL-6 (U/mL)	1160±1104
SP-D (ng/mL)	186±107
Lung cancer, 𝑛 (%)	24(52.2)