Is a set a valid adjustment set in an ADMG?

Checks whether Z is a valid adjustment set for estimating the causal effect of X on Y in an ADMG using the generalized adjustment criterion.

Usage

is_valid_adjustment_admg(
  cg,
  X = NULL,
  Y = NULL,
  Z = NULL,
  X_index = NULL,
  Y_index = NULL,
  Z_index = NULL
)

Arguments

cg

A caugi object of class ADMG.

X, Y

Node names (can be vectors for multiple treatments/outcomes).

Z

Conditioning set (character vector of node names).

X_index, Y_index, Z_index

Optional 1-based indices.

Value

Logical value indicating if the adjustment set is valid.

See also

Other adjustment: adjustment_set(), all_adjustment_sets_admg(), all_backdoor_sets(), d_separated(), is_valid_backdoor(), minimal_d_separator()

Examples

# Classic confounding
cg <- caugi(
  L %-->% X,
  X %-->% Y,
  L %-->% Y,
  class = "ADMG"
)

is_valid_adjustment_admg(cg, X = "X", Y = "Y", Z = NULL) # FALSE
#> [1] FALSE
is_valid_adjustment_admg(cg, X = "X", Y = "Y", Z = "L") # TRUE
#> [1] TRUE