Code for "Multivariable Prediction of Postural Sway: Development and Internal Validation of Mixed-Effects Models for COP Velocity and Sway Area"

The computational methodology used in the present work employed a fully automated predictive-modeling pipeline implemented in R (version 4.5.1). The workflow followed a split-sample strategy for model development and internal validation. A primary execution script orchestrates all steps—from CoP data preprocessing to feature extraction, model training, evaluation, and statistical reporting—ensuring complete reproducibility of the analysis.