Fig 3. Kaplan Meier curves of the survival of patients with acute exacerbation of idiopathic interstitial pneumonia who were stratified according to median baseline serum syndecan-4 level.

Baseline serum syndecan-4 levels measurements were obtainable for 34 of the 56 AE-IIP patients. The survival rate was significantly better for patients with low baseline serum syndecan-4 levels than with high baseline serum syndecan-4 levels. (Low baseline serum syndecan-4 group, < 12.8 ng/ml; High baseline serum syndecan-4 group, ≥ 12.8 ng/ml.) A log-rank test was used for statistical analysis.