cStep1 {forsearch} | R Documentation |
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
[Package forsearch version 6.3.0 Index]