Table 2 AUCs of Transported Models and Refitted Models for AKI and Severe AKI in the Validation Cohorts

From: Development and validation of a real-time prediction model for acute kidney injury in hospitalized patients

Outcome

AUC (95% CI) for transported models

Site 1 (n = 17,074)

Site 2(n = 39,605)

Site 3 (n = 21,239)

Site 4 (n = 22,603)

Site 5 (n = 13,605)

AKI

 In 24 h

0.87(0.86–0.87)

0.81(0.80–0.81)

0.75(0.75–0.76)

0.81(0.80–0.81)

0.78(0.78–0.79)

 In 48 h

0.85(0.84–0.86)

0.78(0.78–0.79)

0.74(0.74–0.75)

0.81(0.81–0.82)

0.78(0.78–0.79)

 In 72 h

0.84(0.84–0.85)

0.76(0.76–0.76)

0.72(0.72–0.73)

0.80(0.80–0.81)

0.76(0.76–0.77)

Severe AKI

 In 24 h

0.91(0.91–0.92)

0.87(0.87–0.88)

0.85(0.84–0.85)

0.89(0.88–0.90)

0.88(0.87–0.89)

 In 48 h

0.90(0.89–0.91)

0.85(0.85–0.86)

0.83(0.82–0.84)

0.89(0.88–0.89)

0.86(0.85–0.87)

 In 72 h

0.89(0.89–0.90)

0.83(0.83–0.84)

0.82(0.81–0.82)

0.88(0.88–0.88)

0.84(0.83–0.84)

AUC (95%CI) for Refitted Models

AKI

 In 24 h

0.91(0.90–0.92)

0.89(0.89–0.90)

0.82(0.81–0.82)

0.91(0.90–0.91)

0.90(0.90–0.91)

 In 48 h

0.90(0.89–0.90)

0.86(0.86–0.87)

0.81(0.80–0.81)

0.89(0.88–0.89)

0.90(0.89–0.90)

 In 72 h

0.87(0.86–0.87)

0.83(0.83–0.83)

0.79(0.78–0.79)

0.87(0.87–0.88)

0.86(0.86–0.87)

Severe AKI

 In 24 h

0.96(0.95–0.97)

0.94(0.93–0.94)

0.89(0.88–0.90)

0.93(0.93–0.94)

0.93(0.92–0.93)

 In 48 h

0.95(0.94–0.95)

0.92(0.92–0.92)

0.88(0.87–0.88)

0.93(0.93–0.94)

0.91(0.91–0.92)

 In 72 h

0.92(0.92–0.93)

0.90(0.90–0.91)

0.85(0.85–0.86)

0.92(0.91–0.92)

0.90(0.90–0.91)

  1. AKI acute kidney injury, AUC area under the curve, CI confidence interval, Site 1 Peking University First Hospital, Site 2 Sichuan Provincial People’s Hospital, Site 3 the Second Affiliated Hospital of Harbin Medical University, Site 4 Beijing Miyun District Hospital, Site 5 Taiyuan Central Hospital.