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Table 4 Summary statistics for selected thresholds of Recalibrated Pooled KFRE SEA equation for 5-year risk of end-stage kidney disease

From: Validation of the kidney failure risk equation for end-stage kidney disease in Southeast Asia

Threshold

Recalibrated Pooled KFRE SEA equationa AUC (95% CI): 0.94 (0.93–0.95)

CKD-EPI eGFR mL/min/1.73m2 AUC (95% CI): 0.89 (0.88–0.91)

> 3%

> 5%

> 10%

> 16%

< 30

< 35.4

< 40

< 45

< 60

Cumulative n of patients

8299 (48%)

6017 (35%)

3506 (20%)

2308 (13%)

1958 (11%)

3506 (20%)

5283 (30%)

7813 (45%)

17,271 (100%)

N of patients with CKD needed for evaluation by nephrologists to find one ESKD case

19.7 (18.2–21.3)

12.7 (11.6–13.9)

7.8 (7.2–8.5)

5.6 (5.0–6.0)

5.7 (5.2–6.3)

8.7 (7.9–9.5)

12.2 (11.1–13.3)

16.9 (15.6–18.5)

35.2 (32.3–38.5)

Risk of ESKD

5.8% (5.3–6.3%)

7.9% (7.2–8.6%)

12.8% (11.7–13.9%)

18.0% (16.8–20.0%)

17.6% (16.0–19.3%)

11.5% (10.5–12.6%)

8.2% (7.5–9.0%)

5.9% (5.4–6.4%)

2.8% (2.6–3.1%)

Sensitivity (95% CI)

0.98 (0.97–0.99)

0.97 (0.96–0.98)

0.91 (0.90–0.92)

0.86 (0.85–0.87)

0.70 (0.68–0.72)

0.82 (0.80–0.84)

0.88 (0.87–0.89)

0.94 (0.93–0.95)

1.00 (0.99–1.01)

Specificity (95% CI)

0.53 (0.51–0.55)

0.67 (0.66–0.68)

0.82 (0.81–0.83)

0.89 (0.88–0.90)

0.90 (0.89–0.91)

0.82 (0.81–0.83)

0.71 (0.70–0.72)

0.56 (0.55–0.57)

0.01 (0.00–0.02)

PPV (95% CI)

0.05 (0.04–0.06)

0.07 (0.06–0.08)

0.10 (0.09–0.11)

0.16 (0.14–0.18)

0.18 (0.16–0.20)

0.11 (0.10–0.12)

0.08 (0.07–0.09)

0.06 (0.05–0.07)

0.03 (0.02–0.04)

NPV (95% CI)

0.999 (0.998–1.000)

0.998 (0.997–0.999)

0.997 (0.990–1.004)

0.995 (0.980–1.010)

0.990 (0.970–1.010)

0.994 (0.984–1.004)

0.995 (0.986–1.004)

0.997 (0.992–1.002)

1.000 (0.085–1.015)

LR+ (95% CI)

2.11 (2.08–2.17)

2.92 (2.86–3.03)

5.01 (5.00–5.26)

7.67 (7.14–8.33)

7.00 (6.67–7.69)

4.56 (4.46–4.66)

3.03 (2.94–3.13)

2.14 (2.08–2.17)

1.00 (0.99–1.01)

LR- (95% CI)

0.03 (0.02–0.04)

0.05 (0.04–0.06)

0.10 (0.09–0.11)

0.16 (0.14–0.18)

0.33 (0.31–0.35)

0.22 (0.21–0.23)

0.17 (0.16–0.18)

0.11 (0.10–0.12)

0.00 (− 0.01–0.01)

  1. aThe Recalibrated Pooled KFRE SEA equation for 5-year ESKD risk was calculated as: 1–0.8362 ^ exp. (− 0.2245 × (age/10–7.036) + 0.3212 × (male - 0.5642) - 0.4553 × (eGFR/5–7.222) + 0.4469 × (lnACR - 5.137)). The statistical threshold identified by Youden Index was 16%
  2. Abbreviation: ACR albumin-to-creatinine ratio, AUC area under the receiver operating characteristic curve, CI confidence interval, CKD-EPI Chronic Kidney Disease Epidemiology Collaboration, eGFR estimated glomerular filtration rate, ESKD end-stage kidney disease, KFRE Kidney Failure Risk Equation, LR+ positive likelihood ratio, LR- negative likelihood ratio, NPV negative predictive value, PPV positive predictive value, SEA Southeast Asia