Table 3.
Cox Proportional Hazard Analysis Using a Bivariable Model of the Parameters That Reached a Significant Level on Univariable Testing to Identify Their Prognostic Relevance in Conjunction With the Peak RVOT Gradient
| Parameter | HR | 95% CI | P value |
|---|---|---|---|
| RVOT gradient, mm Hg | 1.03 | 1.00–1.05 | 0.025* |
| Peak VO2 at VAT, mL/min per kg | 0.93 | 0.88–0.98 | 0.01* |
| RVOT gradient, mm Hg | 1.03 | 1.00–1.06 | 0.016* |
| LVEDVi, mL/m2 | 1.03 | 1.01–1.05 | 0.003* |
| RVOT gradient, mm Hg | 1.04 | 1.00–1.06 | 0.007* |
| LVESVi, mL/m2 | 1.03 | 1.02–1.05 | <0.001* |
| RVOT gradient, mm Hg | 1.03 | 1.00–1.06 | 0.05 |
| RV‐LS, % | 1.17 | 1.02–1.35 | 0.023* |
| RVOT gradient, mm Hg | 1.03 | 1.00–1.06 | 0.045* |
| LV‐CS (%) | 1.14 | 1.04–1.24 | 0.006* |
CS indicates circumferential strain; HR, hazard ratio; LS, longitudinal strain; LV, left ventricular; LVEDVi, left ventricular end‐diastolic volume; LVESVi, left ventricular end‐systolic volume; RV, right ventricular; RVOT, RV outflow tract; VAT, ventilator anaerobic threshold; and VO2, oxygen uptake.
*
indicates statistical significance (P<0.05).