testRR {samplesizeestimator}R Documentation

Sample size for testing relative risk

Description

When we try to associate multiple exposures to an outcome, we need to know the relative risk (RR) of a particular exposure in the presence of other exposures and test their importance in the model using a significance test based on RR. This function computes sample size based on testing RR for a cohort study design.

Usage

testRR(RR, p0, alp, pwr, k = 1)

Arguments

RR

anticipated relative risk

p0

probability of outcome among the unexposed

alp

level of significance or accepted level of probability of type I error

pwr

desired level of power

k

number of unexposed for each exposed

Value

a list object with minimum required sample size along with description for reporting

Author(s)

R. Amala, Scientist-C, ICMR-VCRC, Puducherry & G. Kumarapandiyan, Asst. Prof., Madras Christian College, Chennai

Examples

testRR(p0 = 0.2, RR = 1.5, alp = 0.05, pwr = 0.84, k = 1)

[Package samplesizeestimator version 1.0.0 Index]