To cite package ‘Characterization’ in publications use:

  Reps J, Ryan P, Knoll C (2025). _Characterization: Implement
  Descriptive Studies Using the Common Data Model_. R package version
  2.1.3, , <https://github.com/ohdsi/characterization>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {Characterization: Implement Descriptive Studies Using the Common Data Model},
    author = {Jenna Reps and Patrick Ryan and Chris Knoll},
    year = {2025},
    note = {R package version 2.1.3, 
},
    url = {https://github.com/ohdsi/characterization},
  }