Contralateral spread of unilateral tremor in Parkinson's Disease

Source code for the analysis presented in the paper "Contralateral spread of unilateral tremor in Parkinson's Disease". This code was created to analyze data accessed from the PPMI database (RRID:SCR 006431) on April 12, 2024. As the PPMI database is always evolving, it is possible that the code may not work if the database has changed since the date the code was created. Analytic datasets are not included in the submission. Researchers can request access to PPMI data at the PPMI Study website (https://www.ppmi-info.org/access-data-specimens/download-data). Custom-created datasets for this specific analysis, which include participants' anonymyzed IDs, are available from the authors upon request.