Comparison of Clinical Features between the High and Low Serum KL-6 Patients with Acute Exacerbation of Interstitial Lung Diseases

Figure 2

Relationship between 6-month mortality and serum LDH levels. In patients with low serum KL-6 levels, the AUC is 0.541 in the evaluation of serum LDH as a predictor of 6-month mortality (a). Log-rank tests show that the Kaplan–Meier survival curves of these groups do not differ significantly ( = 0.227) (A). On the contrary, in the patients with high serum KL-6 levels, the AUC value is 0.897 in the evaluation of serum LDH as a predictor of 6-month mortality (b). Log-rank tests show that the Kaplan–Meier survival curves of these groups differ significantly ( < 0.001) (B). AUC: area under the ROC curve; LDH: lactate dehydrogenase; KL-6: Krebs von den Lungen-6.

(a)

(b)