Table 3:
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C-indices of the best-performing model for predicting mid-to long-term composite outcome with SPARK variables, postoperative AKI stages and history of malignancy.

    Validation cohort
Composite outcomePopulationDevelopment cohortTemporalSNUBH P1SNUBH P2SMG-BMC
1-yearTotal0.859 (0.809‒0.897)0.882 (0.834‒0.917)0.865 (0.756‒0.930)0.878 (0.818‒0.920)0.863 (0.781‒0.918)
SPARK class ≥B0.741 (0.719‒0.762)0.768 (0.745‒0.790)0.751 (0.696‒0.799)0.759 (0.728‒0.789)0.819 (0.777‒0.856)
PO-AKI0.688 (0.635‒0.736)0.705 (0.640‒0.763)0.715 (0.577‒0.822)0.707 (0.625‒0.778)0.734 (0.622‒0.822)
3-yearTotal0.821 (0.786‒0.851)0.852 (0.813‒0.884)0.798 (0.725‒0.855)0.829 (0.784‒0.866)0.848 (0.788‒0.892)
SPARK class ≥B0.726 (0.711‒0.740)0.746 (0.728‒0.763)0.692 (0.655‒0.727)0.700 (0.677‒0.723)0.798 (0.766‒0.827)
PO-AKI0.681 (0.641‒0.718)0.704 (0.650‒0.753)0.661 (0.562‒0.747)0.691 (0.625‒0.749)0.733 (0.640‒0.810)
    Validation cohort
Composite outcomePopulationDevelopment cohortTemporalSNUBH P1SNUBH P2SMG-BMC
1-yearTotal0.859 (0.809‒0.897)0.882 (0.834‒0.917)0.865 (0.756‒0.930)0.878 (0.818‒0.920)0.863 (0.781‒0.918)
SPARK class ≥B0.741 (0.719‒0.762)0.768 (0.745‒0.790)0.751 (0.696‒0.799)0.759 (0.728‒0.789)0.819 (0.777‒0.856)
PO-AKI0.688 (0.635‒0.736)0.705 (0.640‒0.763)0.715 (0.577‒0.822)0.707 (0.625‒0.778)0.734 (0.622‒0.822)
3-yearTotal0.821 (0.786‒0.851)0.852 (0.813‒0.884)0.798 (0.725‒0.855)0.829 (0.784‒0.866)0.848 (0.788‒0.892)
SPARK class ≥B0.726 (0.711‒0.740)0.746 (0.728‒0.763)0.692 (0.655‒0.727)0.700 (0.677‒0.723)0.798 (0.766‒0.827)
PO-AKI0.681 (0.641‒0.718)0.704 (0.650‒0.753)0.661 (0.562‒0.747)0.691 (0.625‒0.749)0.733 (0.640‒0.810)

SNUBH, Seoul National University Bundang Hospital; SMG-BMC, Seoul Metropolitan Government Boramae Medical Center.

Table 3:
Open in new tab

C-indices of the best-performing model for predicting mid-to long-term composite outcome with SPARK variables, postoperative AKI stages and history of malignancy.

    Validation cohort
Composite outcomePopulationDevelopment cohortTemporalSNUBH P1SNUBH P2SMG-BMC
1-yearTotal0.859 (0.809‒0.897)0.882 (0.834‒0.917)0.865 (0.756‒0.930)0.878 (0.818‒0.920)0.863 (0.781‒0.918)
SPARK class ≥B0.741 (0.719‒0.762)0.768 (0.745‒0.790)0.751 (0.696‒0.799)0.759 (0.728‒0.789)0.819 (0.777‒0.856)
PO-AKI0.688 (0.635‒0.736)0.705 (0.640‒0.763)0.715 (0.577‒0.822)0.707 (0.625‒0.778)0.734 (0.622‒0.822)
3-yearTotal0.821 (0.786‒0.851)0.852 (0.813‒0.884)0.798 (0.725‒0.855)0.829 (0.784‒0.866)0.848 (0.788‒0.892)
SPARK class ≥B0.726 (0.711‒0.740)0.746 (0.728‒0.763)0.692 (0.655‒0.727)0.700 (0.677‒0.723)0.798 (0.766‒0.827)
PO-AKI0.681 (0.641‒0.718)0.704 (0.650‒0.753)0.661 (0.562‒0.747)0.691 (0.625‒0.749)0.733 (0.640‒0.810)
    Validation cohort
Composite outcomePopulationDevelopment cohortTemporalSNUBH P1SNUBH P2SMG-BMC
1-yearTotal0.859 (0.809‒0.897)0.882 (0.834‒0.917)0.865 (0.756‒0.930)0.878 (0.818‒0.920)0.863 (0.781‒0.918)
SPARK class ≥B0.741 (0.719‒0.762)0.768 (0.745‒0.790)0.751 (0.696‒0.799)0.759 (0.728‒0.789)0.819 (0.777‒0.856)
PO-AKI0.688 (0.635‒0.736)0.705 (0.640‒0.763)0.715 (0.577‒0.822)0.707 (0.625‒0.778)0.734 (0.622‒0.822)
3-yearTotal0.821 (0.786‒0.851)0.852 (0.813‒0.884)0.798 (0.725‒0.855)0.829 (0.784‒0.866)0.848 (0.788‒0.892)
SPARK class ≥B0.726 (0.711‒0.740)0.746 (0.728‒0.763)0.692 (0.655‒0.727)0.700 (0.677‒0.723)0.798 (0.766‒0.827)
PO-AKI0.681 (0.641‒0.718)0.704 (0.650‒0.753)0.661 (0.562‒0.747)0.691 (0.625‒0.749)0.733 (0.640‒0.810)

SNUBH, Seoul National University Bundang Hospital; SMG-BMC, Seoul Metropolitan Government Boramae Medical Center.

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