Least Squares, Logistic, and Cox-Regression with Ordered Predictors
Internal functions for ordered factor regression functions
Least Squares, Logistic, and Cox-Regression with Ordered Predictors
Compute least squares or logistic regression for ordered predictors
Compute Cox-regression for ordered predictors
Prepare input data to be used in active set algorithm
In biomedical studies, researchers are often interested in assessing the association between one or more ordinal explanatory variables and an outcome variable, at the same time adjusting for covariates of any type. The outcome variable may be continuous, binary, or represent censored survival times. In the absence of a precise knowledge of the response function, using monotonicity constraints on the ordinal variables improves efficiency in estimating parameters, especially when sample sizes are small. This package implements an active set algorithm that efficiently computes such estimators.