Creating Objects of Group Quantile Differences

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 jointCovariance or pated through .... Because the empirical-quantile estimator has no tractable closed-form score, this engine is available only through the bootstrap path (nboot > 0).

Usage

quantile_(formula, probs = c(0.25, 0.5, 0.75), data_index = 1)

Arguments

formula

a two-sided formula y ~ arm where the right-hand side is a binary grouping variable.

probs

numeric vector of probabilities in (0, 1). By default the first quartile, median, and third quartile.

data_index

integer. Index of the data frame in the data argument of jointCovariance to be used.