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ROC mortality curves for [AGcl], [SIG] and [SIGi]. Note the small Areas Under the Curve (AUC) for all 3 parameters. For [SIG] AUC: 0.479, 95% CI [0.351, 0.606], for [SIGi] AUC: 0.581, 95% CI [0.457, 0.705] and for [AGcl] AUC: 0.529, 95% CI [0.401, 0.656]. None of the parameters demonstrated a significant predictive ability for mortality.
