Description of TriNetX database, utilized methods and administrative codes, results of stratification and sensitivity analysis

Description of TriNetX database, utilized methods and administrative codes, results of stratification and sensitivity analysis. Supplementary files of "Major Depressive Disorder, Bipolar Disorder and Schizophrenia in Patients with Prurigo Nodularis: a Multicenter Retrospective Cohort Study derived from TriNetX research network" for publication in the Journal of the American Academy of Dermatology.