Table 2—

Variable associated with survival

HR95% CIp-value
At baseline
    6MWD per 50 m1.421.16–1.840.002
    RAP mmHg0.90.81–0.990.034
After 4 months
    6MWD absolute per 50 m1.931.42–2.630.001
    Δ6MWD per 50 m1.661.05–2.500.022
    ΔTPR per 10%0.790.63–0.990.044
  • HR: hazard ratio; CI: confidence interval; 6MWD: 6-min walk distance; RAP: right atrial pressure; Δ6MWD: change in 6MWD; ΔTPR: change in total pulmonary resistance.