The reason for modelling on the log cumulative excess hazard scale instead of the log excess hazard scale is because the log cumulative excess hazard is a relatively stable function, and it is easier to capture its shape.
However, in an interdisciplinary clinical setting an absolute excess risk scale is more acceptable.
The models are fitted on the log cumulative excess hazard scale using restricted cubic splines for the baseline.
The flexible parametric survival model [ 14, 15] is fitted on the log cumulative excess hazard scale, using restricted cubic splines to estimate the baseline cumulative excess hazard.
The latter models are fitted on the log cumulative excess hazard scale using restricted cubic splines [ 12] for the baseline excess hazard and for any time-dependent effects.
These models are fitted in continuous time on the log cumulative baseline excess hazard scale using restricted cubic splines to estimate the baseline log cumulative excess hazard.
Alternatives, including modelling on the log excess hazard scale, may offer more interpretable options when time dependent coefficients are present [ 41].
Net survival was modelled on the log cumulative excess hazard scale in a flexible parametric framework using the stpm2 (Lambert and Royston, 2009) command in Stata version 12 (StataCorp LP, College Station, TX, USA).
The viscosity, thermal conductivity and Prandtl's number of HFC and HFO refrigerants were studied using an excess entropy scaling approach.
As we pack away our unfashionable excesses and scale back on jet-set plans, we'll be looking to spend precious dollars on quality gear for high-value, locally focused experiences like packing up the car and heading out to the state park for a nature-filled, toasty warm weekend with friends and family.
