testRR: Sample size for testing relative risk

In samplesizeestimator: Calculate Sample Size for Various Scenarios

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)

samplesizeestimator documentation built on Oct. 11, 2023, 1:06 a.m.