Safety and Feasibility of Serial Lumbar Punctures: Long-term Results from the Parkinson's Progression Markers Initiative

The shared code was created to perform analyses for the published article, "Safety and Feasibility of Serial Lumbar Punctures: Long-term Results from the Parkinson's Progression Markers Initiative" (https://doi.org/10.1016/j.prdoa.2025.100385). This code was created to analyze data accessed from the PPMI database (RRID:SCR_006431) on June 17, 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).