Generate draws from posterior beta-binomial distributions

Used internally. This function generates draws from posterior distributions using separate beta-binomial models (binomial outcome, conjugate beta prior) for each arm, with flat (beta(1, 1)) priors.

Usage

get_draws_binom(arms, allocs, ys, control, n_draws)

Arguments

arms

character vector, currently active arms as specified in setup_trial() / setup_trial_binom() / setup_trial_norm().

allocs

character vector, allocations of all patients (including allocations to currently inactive arms).

ys

numeric vector, outcomes of all patients in the same order as alloc (including outcomes of patients in currently inactive arms).

control

unused argument in the built-in functions for setup_trial_binom() and setup_trial_norm, but required as this argument is supplied by the run_trial() function, and may be used in user-defined functions used to generate posterior draws.

n_draws

single integer, number of posterior draws.

Value

A matrix (with numeric values) with length(arms) columns and n_draws rows, with arms as column names.