View source: R/methodAttrition.R
attrition.cohort_table | R Documentation |
Get cohort attrition from a cohort_table object.
## S3 method for class 'cohort_table'
attrition(x)
x |
A cohort_table |
A table with the attrition.
library(omopgenerics)
library(dplyr, warn.conflicts = FALSE)
person <- tibble(
person_id = 1, gender_concept_id = 0, year_of_birth = 1990,
race_concept_id = 0, ethnicity_concept_id = 0
)
observation_period <- tibble(
observation_period_id = 1, person_id = 1,
observation_period_start_date = as.Date("2000-01-01"),
observation_period_end_date = as.Date("2023-12-31"),
period_type_concept_id = 0
)
cohort <- tibble(
cohort_definition_id = c(1, 1, 1, 2),
subject_id = 1,
cohort_start_date = as.Date(c("2020-01-01", "2021-01-01", "2022-01-01", "2022-01-01")),
cohort_end_date = as.Date(c("2020-01-01", "2021-01-01", "2022-01-01", "2022-01-01")),
)
cdm <- cdmFromTables(
tables = list("person" = person, "observation_period" = observation_period),
cdmName = "my_example_cdm",
cohortTables = list("cohort1" = cohort)
)
attrition(cdm$cohort1)
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