Fig. 2From: Predictors of healthy physiological aging across generations in a 30-year population-based cohort study: the Doetinchem Cohort StudyExposure selection through cross-validation showing the prediction performance (root mean square error, RMSE) (y-axis) of the model using a particular number of top-ranked exposures (x-axis). The dotted gray line represents the optimum number of exposures to select (x = 10)Back to article page