U_equation: Form the Estimating Equation

In ZexiCAI/TVQRLB: Quantile Regression Model with Time-Varying Covariates under Length-Biased Sampling

Description

Set up an estimating equation.

Usage

U_equation(beta, dataset, denom, qtile, weight, norm = TRUE)

Arguments

beta	The parameter estimate.
dataset	The survival data.
denom	The denominator used in the estimating equation.
qtile	The quantile level used to conduct the quantile regression.
weight	The weight of each observation. Default is equal weights.
norm	Whether the norm of the function value should be returned. TRUE: return the norm; FALSE: return the function value. Default is TRUE.

Value

This function returns the function value (a vector of length n+1) of the estimating equation evaluated at "beta" if norm = FALSE; otherwise returns the norm of it.

References

Cai, Z. and Sit, T. (2018+), "Quantile regression model with time-varying covariates under length-biased sampling," Working Paper.

ZexiCAI/TVQRLB documentation built on Dec. 30, 2019, 6:02 p.m.