Feature request: matchCohort - support matching from a predefined set of patients

[haugmarkus]

Hello there,

I am interested in using the matchCohort function to address the following use case:
I want the function to generate a matching sample of patients from a predefined set of patients, so that I can compare the prevalence of different concepts between those cohorts using the CohortContrast package.

Is there a way to achieve this using the functionalities already implemented? If not, it would be an awesome feature to have. Please let me know if this is within the scope of the package.

Let's assume I have a target cohort with the ID of 1 and a control cohort with the ID of 2 in the cohort table. A potential execution could look like this:

matchCohorts(
  cohort,
  cohortId = 1,
  matchCohortId = 2,
  matchSex = TRUE,
  matchYearOfBirth = TRUE,
  ratio = 1,
  name = tableName(cohort)
)

[haugmarkus]

I will tag @martaalcalde as I already informed her of my request :)