% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/quantile_.R
\name{quantile_}
\alias{quantile_}
\title{Creating Objects of Group Quantile Differences}
\usage{
quantile_(formula, probs = c(0.25, 0.5, 0.75), data_index = 1)
}
\arguments{
\item{formula}{a two-sided formula \code{y ~ arm} where the right-hand side is a
binary grouping variable.}

\item{probs}{numeric vector of probabilities in \verb{(0, 1)}. By default the
first quartile, median, and third quartile.}

\item{data_index}{integer. Index of the data frame in the \code{data} argument
of \code{jointCovariance} to be used.}
}
\description{
\code{quantile_} is a wrapper function creating an object that, for each
requested probability, computes the difference between the two arms'
sample quantiles of the outcome. The object is passed to \code{jointCovariance}
or \code{pated} through \code{...}. Because the empirical-quantile estimator has no
tractable closed-form score, this engine is available only through the
bootstrap path (\code{nboot > 0}).
}
