ACEF-TAAD: three requested analyses

This repository contains a consolidated R script for three analyses of the ACEF-TAAD score: nomogram construction, bootstrap internal validation, and decision-curve analysis. The script uses the rms package to construct the nomogram and perform 1,000 bootstrap resamples, with predictors and biomarker cutoffs held fixed while regression coefficients are re-estimated. Decision-curve analysis uses the rmda package to assess net benefit in the training and external test sets using the model fitted in the training set. The archive includes the R script, a README, a variable dictionary, and an empty input template. Patient-level data are not included. This script was consolidated during manuscript revision and has not yet been execution-verified in R.