Fig. 1From: Impact of correlation of predictors on discrimination of risk models in development and external populationsRelationships between AUC and correlation coefficient of two predictors: a Odds Ratios pointing in the same direction; b Odds Ratios pointing in opposite directions. Legend: Modeling is based on Approach I with populationμ : (0, 0);σ : (1, 1). ρ: Pearson correlationBack to article page