Table 5– Comparison of predictive accuracy between the Scottish composite score (SCS) and other published prognostic equations
BS (95% CI)p-value
Predicting 1-yr survival
 French registry equation0.146 (0.120–0.175)
 PHC registry equation0.111 (0.060–0.168)
 SCS0.092 (0.058–0.130)
 Difference: SCS - French registry equation-0.055 (-0.083– -0.024)0.001
 Difference: SCS - PHC registry equation-0.019 (-0.059–0.017)0.328
Predicting 2-yr survival
 French registry equation0.255 (0.210–0.302)
 PHC registry equation0.189 (0.133–0.250)
 SCS0.131 (0.091–0.175)
 Difference: SCS - French registry equation-0.124 (-0.176– -0.070)<0.001
 Difference: SCS - PHC registry equation-0.058 (-0.122– -0.002)0.060
  • BS: Brier score; PHC: Pulmonary Hypertension Connection. A Brier Score of 0 indicates perfect prediction and 0.25 indicates a prediction equivalent to random chance.