riAFTBART | R Documentation |
This function implements the random effect accelerated failure time BART (riAFT-BART) for causal inference with multiple treatments and clustered survival outcomes.
riAFTBART( M.burnin, M.keep, M.thin = 1, status, y, x, trt, cluster.id, verbose = FALSE, estimand = "ATE", reference_trt = NULL )
M.burnin |
A numeric value indicating the number of MCMC iterations to be treated as burn in. |
M.keep |
A numeric value indicating the number of MCMC posterior draws after burn in. |
M.thin |
A numeric value indicating the thinning parameter. |
status |
A vector of event indicators: status = 1 indicates that the event was observed while status = 0 indicates the observation was right-censored. |
y |
A vector of follow-up times. |
x |
A dataframe or matrix, including all the covariates but not treatments with rows corresponding to observations and columns to variables. |
trt |
A numeric vector representing the treatment groups. |
cluster.id |
A vector of integers representing the clustering id. The cluster id should be an integer and start from 1. |
verbose |
A logical indicating whether to show the progress bar for riAFT-BART. The default is FALSE |
estimand |
A character string representing the type of causal estimand. Only |
reference_trt |
A numeric value indicating reference treatment group for ATT effect. |
A list of causal estimands in terms of log T between different treatment groups.
library(riAFTBART) set.seed(20181223) n = 5 # number of clusters k = 50 # cluster size N = n*k # total sample size cluster.id = rep(1:n, each=k) tau.error = 0.8 b = stats::rnorm(n, 0, tau.error) alpha = 2 beta1 = 1 beta2 = -1 sig.error = 0.5 censoring.rate = 0.02 x1 = stats::rnorm(N,0.5,1) x2 = stats::rnorm(N,1.5,0.5) trt.train = sample(c(1,2,3), N, prob = c(0.4,0.3,0.2), replace = TRUE) trt.test = sample(c(1,2,3), N, prob = c(0.3,0.4,0.2), replace = TRUE) error = stats::rnorm(N,0,sig.error) logtime = alpha + beta1*x1 + beta2*x2 + b[cluster.id] + error y = exp(logtime) C = rexp(N, rate=censoring.rate) # censoring times Y = pmin(y,C) status = as.numeric(y<=C) res_ate <- riAFTBART(M.burnin = 10, M.keep = 10, M.thin = 1, status = status, y = Y, trt = trt.train, x = cbind(x1,x2), cluster.id = cluster.id, estimand = "ATE")
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.