[[.cdm_reference {omopgenerics}

Subset a cdm reference object.

Description

Subset a cdm reference object.

Usage

## S3 method for class 'cdm_reference'
x[[name]]

Arguments

x

A cdm reference

name

The name or index of the table to extract from the cdm object.

Value

A single cdm table reference

Examples

library(omopgenerics)
library(dplyr, warn.conflicts = FALSE)

cdm <- cdmFromTables(
  tables = list(
    "person" = tibble(
      person_id = c(1, 2, 3), gender_concept_id = 0, year_of_birth = 1990,
      race_concept_id = 0, ethnicity_concept_id = 0
    ),
    "observation_period" = tibble(
      observation_period_id = 1:3, person_id = 1:3,
      observation_period_start_date = as.Date("2000-01-01"),
      observation_period_end_date = as.Date("2025-12-31"),
      period_type_concept_id = 0
    )
  ),
  cdmName = "mock"
)

cdm[["person"]]