sp_locscale

Formula specifying the model for the location

formula.location

Formula specifying the model for the scale

formula.scale

data

Weights applied to the estimating equations

weights

maxit

This estimates the location-scale model as described in Heagerty and Pepe (1999) using the Newton-Raphson method. The location and scale formulas must have the same outcome, but they may have different predictors.

Contains the core methods for the evaluation of principal
surrogates in a single clinical trial. Provides a flexible interface for
defining models for the risk given treatment and the surrogate, the models
for integration over the missing counterfactual surrogate responses, and the
estimation methods. Estimated maximum likelihood and pseudo-score can be used
for estimation, and the bootstrap for inference. A variety of post-estimation
summary methods are provided, including print, summary, plot, and testing.

sp_locscale: Fit the semi-parametric location-scale model

Description

Usage

Arguments

Value