Figure 1From: Prognostic value of alveolar volume in systolic heart failure: a prospective observational study Estimated cumulative mortality in the study sample split by alveolar volume (V A ) as % predicted: V A <80% (red step curve); V A ≥80% (blue step curve). Estimates are adjusted for age, NYHA class III-IV, cardiothoracic ratio >0.5, NT-proBNP, persistent atrial fibrillation, DLCO as % predicted, and COPD comorbidity. P-value by log-rank test = 0.032.Back to article page