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Table 4 Multivariate Cox regression analysis with selected variables

From: A proposed prognostic prediction score for pleuroparenchymal fibroelastosis

Variables

HR (95% CI)

P value

Coefficient value

Integral coefficient

%FVC (< 65%)

2.23 (1.21–4.10)

0.01

0.801

1

History of pneumothorax (yes)

3.27 (1.68–6.38)

< 0.001

1.186

1

ILD in the lower lobes* (yes)

2.31 (1.05–5.10)

0.038

0.838

1

KL-6 (> 550 U/ml)

2.56 (1.39–4.72)

< 0.01

0.941

1

  1. HR hazard ratio, CI confidence interval, FVC forced vital capacity, ILD interstitial lung disease, KL-6 Krebs von den Lungen-6
  2. *ILD in the lower lobes indicates any pattern of fibrosis including the UIP pattern and PPFE