Ch17-CRRtoRR: Cumulative-risk ratios to risk ratios
In PwrGSD: Power in a Group Sequential Design

CRRtoRR

R Documentation

Cumulative-risk ratios to risk ratios

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

 CRRtoRR(CRR, DT, h = NULL)

`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`