Ch17-CRRtoRR: Cumulative-risk ratios to risk ratios

In PwrGSD: Power in a Group Sequential Design

Description

Given a vector of cumulative-risk ratios, computes risk ratios

Usage

 CRRtoRR(CRR, DT, h = NULL)

Arguments

CRR	vector of cumulative risk ratios of length m
DT	vector of time increments upon which the cumulative ratios represent. For example if the hazard takes values $h_1, h_2, ..., h_m$ on the intervals $[t_1, t_2), [t_2, t_3), ..., [t_m, t_m+1)$ then DT will be c($t_2-t_1,t_3 -t_2, ..., t_m+1 - t_m )$
h	The hazard in the reference arm, of length m

Value

The vector of risk ratios at the m time points

Author(s)

Grant Izmirlian <[e-mail]>

Examples

  ## none as yet

Example output

Loading required package: survival
PwrGSD 2.3.1

PwrGSD documentation built on Dec. 11, 2021, 9:43 a.m.