est.power: Estimated power to detect a valid surrogate

In SurrogateRank: Rank-Based Test to Evaluate a Surrogate Marker

Estimated power to detect a valid surrogate

Description

Calculates the estimated power to detect a valid surrogate given a total sample size and specified alternative

Usage

est.power(n.total, rho = 0.8, u.y.alt, delta.alt, power.want.s = 0.7)

Arguments

n.total	total sample size in study
rho	rank correlation between Y and S in group 0, default is 0.8
u.y.alt	specified alternative for u.y
delta.alt	specified alternative for u.s
power.want.s	desired power for u.s, default is 0.7

Value

estimated power

Author(s)

Layla Parast

Examples

est.power(n.total = 50, rho = 0.8, u.y.alt=0.9, delta.alt = 0.1)

SurrogateRank documentation built on June 8, 2025, 10:27 a.m.