highly significantp = 0.0004
When the TTRS was included, the goodness of fit of the multivariable model was highly significant (R 2 = 0.84, p = 0.0004; LoF p = 0.99), and the variables significantly associated with the CFR were BCS ( p = 0.004), the skeletal score ( p < 0.0001) and the TTRS itself ( p = 0.008).