Fig. 3From: Borderline pulmonary hypertension is associated with exercise intolerance and increased risk for acute exacerbation in patients with interstitial lung diseaseKaplan-Meier analysis for the 1-year survival according to the 3-groups of ILD patients. There were no significant differences among the 3 groups. Definition of abbreviations: ILD, interstitial lung disease; PH, pulmonary hypertensionBack to article page