h_log_hr_est_via_score: Estimate Log Hazard Ratio via Score Function

In RobinCar2: ROBust INference for Covariate Adjustment in Randomized Clinical Trials

Estimate Log Hazard Ratio via Score Function

Description

This function estimates the log hazard ratio by finding the root of the log-rank score function.

Usage

h_log_hr_est_via_score(score_fun, interval = c(-5, 5), ...)

Arguments

score_fun	(function) The log-rank score function to be used for estimation.
interval	(numeric) A numeric vector of length 2 specifying the interval in which to search for the root.
...	Additional arguments passed to score_fun.

Details

This deactivates the ties factor correction in the score function by passing use_ties_factor = FALSE to the score_fun.

Value

A list containing:

• theta: The estimated log hazard ratio.

• se: The standard error of the estimated log hazard ratio.

• sigma_L2: The variance of the log-rank statistic.

• n: The number of observations used in the calculation.

RobinCar2 documentation built on Sept. 9, 2025, 5:28 p.m.