newllk: Proportional hazards partial likelihood, using Breslow method...

In PHInfiniteEstimates: Tools for Inference in the Presence of a Monotone Likelihood

Proportional hazards partial likelihood, using Breslow method for ties, excluding some observations.

Description

This function implements the approximate conditional inferential approach of \insertCitekz19;textualPHInfiniteEstimates to proportional hazards regression.

Usage

newllk(
  beta,
  fit,
  exclude = NULL,
  minus = FALSE,
  keeponly = NULL,
  justd0 = FALSE,
  cc1 = 0
)

Arguments

beta	parameter vector.
fit	Output from a Cox PH regression, with x=TRUE and y=TRUE
exclude	data set with stratum and patient number to exclude.
minus	logical flag to change sign of partial likelyhood
keeponly	variables to retain. Keep all if this is null or NA.
justd0	logical variable, indicating whether to calculate only the function value and skip derivatives.
cc1	Continuity correction for first component of the score.

Value

a list with components

• d0 partial likelihood

• d1 first derivative vector

• d2 second derivative matrix

References

\insertRef

kz19PHInfiniteEstimates

PHInfiniteEstimates documentation built on Nov. 24, 2023, 9:06 a.m.