CoxC: Estimate beta

In XuemeiDing/survival19: Deal with Stratified Cox Proportional Hazard Model

Description

This function estimates beta in a stratified Cox proportional hazard model. You can also set facility to be the same and model an unstratified Cox model with this function. Note: facility must be integer 1, or a successive vector of integer from 1 to num_facility (number of facilities). String, float, or any other types of facility must be converted to successive integers first. Missingness is not accepted, and the observations must be ordered by time. Ties might affect the correctness.

Usage

CoxC(delta, z, facility, num_facility, tol)

Arguments

delta	indicator vector of event
z	design matrix
facility	which facility each patient belongs to
num_facility	number of facilities (strata)
tol	tolerance of precision, when highest change in beta is lower than or equal to tol, iteration stops

Value

estimated beta

Examples

set.seed(2019)
testdata = generate_data()
CoxC(testdata$delta, testdata$z, testdata$facility, testdata$num_facility, tol= 1.0e-6)

XuemeiDing/survival19 documentation built on Dec. 1, 2019, 9:52 p.m.