% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/sample_size_comp.R
\name{sample_size_comp}
\alias{sample_size_comp}
\title{Sample size calculation for comparisons}
\usage{
sample_size_comp(
  type,
  n1 = NULL,
  n2 = NULL,
  p1 = NULL,
  p2 = NULL,
  delta = NULL,
  sd = NULL,
  conf_lev = NULL,
  power = NULL,
  ratio = 1,
  alternative = "two.sided"
)
}
\arguments{
\item{type}{Choose "mean" or "proportion"}

\item{n1}{Sample size for group 1}

\item{n2}{Sample size for group 2}

\item{p1}{Proportion 1 (only used when "proportion" is selected)}

\item{p2}{Proportion 2 (only used when "proportion" is selected)}

\item{delta}{Difference in means between two groups (only used when "mean" is selected)}

\item{sd}{Standard deviation (only used when "mean" is selected)}

\item{conf_lev}{Confidence level}

\item{power}{Power}

\item{ratio}{Sampling ratio (n1 / n2)}

\item{alternative}{Two or one sided test}
}
\value{
A list of variables defined in sample_size_comp as an object of class sample_size_comp
}
\description{
Sample size calculation for comparisons
}
\details{
See \url{https://radiant-rstats.github.io/docs/design/sample_size_comp.html} for an example in Radiant
}
\examples{
sample_size_comp(
  type = "proportion", p1 = 0.1, p2 = 0.15,
  conf_lev = 0.95, power = 0.8
)

}
\seealso{
\code{\link{summary.sample_size_comp}} to summarize results
}