Jeff Suzuki, Multiplying and Dividing Polynomials Using Geloxia, The College Mathematics Journal, Vol. 30, No. 1 (Jan., 1999), pp. 50-53 ...

Regression models using fractional polynomials of the covariates have appeared in the literature in an ad hoc fashion over a long period; we provide a unified description and a degree of formalization ...

In our approach, we categorised a continuous prognostic index produced by the multivariable fractional polynomial (MFP) algorithm, using a strategy in which continuous predictors are kept continuous.