Create a distinct-concept-count variable — omop_variable_n_distinct • dsOMOPClient

Produces a feature variable that counts the number of distinct concept IDs per person in the specified table.

Usage

omop_variable_n_distinct(table, name = NULL)

Arguments

table: Character; source OMOP CDM table (e.g. "condition_occurrence").
name: Character or NULL; output column name (auto-generated as "n_distinct_<table>" if NULL).

Value

An omop_variable object with format = "n_distinct" and a $derived metadata field.

See also

omop_variable, omop.feature.n_distinct

Examples

if (FALSE) { # \dontrun{
recipe <- omop_recipe(
  variables = omop_variable_n_distinct("condition_occurrence"),
  outputs = omop_output(type = "wide"))
} # }