Urinary Biomarkers of Oxidative Stress in Aging: Implications for Prediction of Accelerated Biological Age in Prospective Cohort Studies

Figure 6

Decision tree for classifying accelerated aging. Squares represent nonterminal nodes with the number of corresponding cases (). Each classified case appears in a terminal node denoted by a triangle (either —accelerated agers or —nonaccelerated ager cases). Decision rules based on thresholds for the given urinary oxidative stress marker levels and corresponding paths (yes/no) are illustrated by circles with branching arrows.