Additional file 1 of Variability in the prevalence of depression among adults with chronic pain: UK Biobank analysis through clinical prediction models

Additional file 1: Supplementary A. Details for defining pain. Supplementary B. Details for covariates. Supplementary C. Sample size calculation. Supplementary D. Details for modeling. Supplementary E. Univariate associations of the covariates with depression outcomes. Supplementary F. Predictors in the initial full model. Supplementary G. Details for model approximation. Supplementary H. Equations of the final simplified model. Supplementary I. Model performance. Supplementary J. Nomograms for secondary outcomes