create_node_list: Create a node list specification

In nt-williams/lmtp: Non-Parametric Causal Effects of Feasible Interventions Based on Modified Treatment Policies

Create a node list specification

Description

Creates a node list specification that is used by the provided estimators. create_node_list() is not explicitly called by the analyst, rather it is provided so the analyst can confirm how estimators will use variables before actually performing the estimation procedure.

Usage

create_node_list(trt, tau, time_vary = NULL, baseline = NULL, k = Inf)

Arguments

trt	A vector of column names of treatment variables.
tau	The number of time points of observation, excluding the final outcome.
time_vary	A list of length tau with the column names for new time_vary to be introduced at each time point. The list should be ordered following the time ordering of the model.
baseline	An optional vector of columns names for baseline covariates to be included for adjustment at every timepoint.
k	An integer specifying how previous time points should be used for estimation at the given time point. Default is Inf, all time points.

Value

A list of lists. Each sub-list is the same length of the time_vary parameter with the variables to be used for estimation at that given time point for either the treatment mechanism or outcome regression.

Examples

a <- c("A_1", "A_2", "A_3", "A_4")
bs <- c("W_1", "W_2")
time_vary <- list(c("L_1"), c("L_2"), c("L_3"), c("L_4"))

# assuming no Markov property
create_node_list(a, 4, time_vary, bs, k = Inf)

# assuming a Markov property
create_node_list(a, 4, time_vary, bs, k = 0)

nt-williams/lmtp documentation built on July 4, 2024, 4:01 a.m.