cStep1: Create Set of Observation Numbers in Step 1 for Cox...

In forsearch: Diagnostic Analysis Using Forward Search Procedure for Various Models

Create Set of Observation Numbers in Step 1 for Cox Proportional Hazards Model Analysis

Description

Derives the first set of observation numbers for forsearch in Cox Proportional Hazards models

Usage

cStep1(df1, df1.ls, inner.rank, initial.sample, f.e, cphties, ycol, b.d)

Arguments

df1	Data frame being analyzed by forward search.
df1.ls	List, each element of which is a factor subset of df1
inner.rank	Rank of X matrix of lm analysis on entire database
initial.sample	Number of random samples from which to take set of initial observations
f.e	Right-hand side of formula for Surv function
cphties	Character value of method of handling ties
ycol	Response column number
b.d	Index of point to begin diagnostic listings

Details

Support function, usually not called independently

Value

Produces set of observation numbers for Step 1. Accounts for presence of factors in the dataset

Author(s)

William R. Fairweather

forsearch documentation built on April 4, 2025, 5:52 a.m.