kmldte: Kaplan-Meier Local Distributional Treatment Effect

Description Usage Arguments Value

View source: R/kmldte.R

Description

kmldte computes the Local Distributional Treatment Effect for possibly right-censored outcomes. The estimator relies on the availability of an Instrumental variable Z, and on a monotonicity assumption. To implement the estimator, we make use of an instrumental propensity score approach. For details of the estimation procedure, see Sant'Anna (2016a), 'Program Evaluation with Right-Censored Data'.

Usage

1
2
kmldte(out, delta, treat, z, xpscore, ysup = NULL, b = 1000, ci = c(0.9,
  0.95, 0.99), cores = 1, monot = TRUE)

Arguments

out

vector containing the outcome of interest

delta

vector containing the censoring indicator (1 if observed, 0 if censored)

treat

vector containing the treatment indicator (1 if treated, 0 if control)

z

vector containing the binary instrument

xpscore

matrix (or data frame) containing the covariates (and their transformations) to be included in the instrument propensity score estimation. Instrument Propensity score estimation is based on Logit.

ysup

scalar or vector of points for which the distributional treatment effect is computed. If NULL, all uncensored data points available are used.

b

The number of bootstrap replicates to be performed. Default is 1,000.

ci

A scalar or vector with values in (0,1) containing the confidence level(s) of the required interval(s). Default is a vector with 0,90, 0.95 and 0.99

cores

number of processesors to be used during the bootstrap (default is 1). If cores>1, the bootstrap is conducted using snow.

monot

Default is TRUE, which impose that the estimated counterfactual distributions are in proper CDF's, i.e. takes values between [0,1], and are non-decreasing. Boundedness is imposed by truncantion, and monotonicity is imposed using the rearrangement procedure proposed by Chernozhukov, Fernandez-Val, and Galichon (2010), implemented in R through package Rearrangement. If FALSE, no adjustment is made.

Value

a list containing the local distributional treatment effect estimate, ldte, and the bootstrapped ci confidence confidence interval, ldte.lb (lower bound), and ldte.ub (upper bound).


pedrohcgs/kmte documentation built on May 24, 2019, 11:46 p.m.