Table 2

 Univariate Cox regression functions using single predictor and time gradients of predictor variable

Model predictorHazard ratiop value95% CI
*p = 0.007; **p<0.0001 (likelihood ratio).16
Peak V˙o2 intercept0.9530.340.865 to 1.051
FEV1 intercept0.9590.0130.928 to 0.0991
Final peak V˙o20.8450.00280.757 to 0.944
Final FEV10.9280.00030.894 to 0.968
Peak V˙o2 intercept0.9100.0870.816 to 1.014
Peak V˙o2 slope0.048*0.0070.005 to 0.430
FEV1 intercept0.915<0.0010.868 to 0.964
FEV1 slope0.008**0.0040.0003 to 0.210