An extension of the proportional-hazards model for grouped data.

@article{ArandaOrdaz1983AnEO,
  title={An extension of the proportional-hazards model for grouped data.},
  author={F J Aranda-Ordaz},
  journal={Biometrics},
  year={1983},
  volume={39 1},
  pages={109-17}
}
A family of transformations for probabilities is considered for the analysis of grouped survival data. Additive and multiplicative models for the hazard function are compared. A method is suggested for estimating the scale on which an additive representation of the hazard, in terms of explanatory variables, is appropriate. Computations are performed using GLIM. A test for departures from the grouped proportional-hazards model is introduced. An example is analyzed by the methods put forward.