Figure 2. Kaplan‐Meier survival curves for time to clinical outcomes stratified by concordant and discordant groups using V_E/VCO₂ slope as the objective measure of heart failure severity.

Kaplan‐Meier survival curves are shown for time to (A) all‐cause mortality or all‐cause hospitalization (P<0.001 for all comparisons; pairwise P<0.001 for symptom magnifiers vs concordant–lower severity group; pairwise P<0.001 for symptom minimizers vs concordant–higher severity group), (B) all‐cause mortality (P<0.001 for all comparisons; pairwise P=0.12 for symptom magnifiers vs concordant–lower severity group; pairwise P=0.72 for symptom minimizers vs concordant–higher severity group), and (C) all‐cause hospitalization (P<0.001 for all comparisons; pairwise P<0.001 for symptom magnifiers vs concordant–lower severity group; pairwise P<0.001 for symptom minimizers vs concordant–higher severity group). V_E/VCO₂ indicates slope of minute ventilation/carbon dioxide production.