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Table 2 Sensitivity/specificity of URR for detecting Kt/V

From: Urea reduction ratio may be a simpler approach for measurement of adequacy of intermittent hemodialysis in acute kidney injury

URR

Kt/V ≥ 1.2

Kt/V ≥ 1.3

Kt/V ≥ 1.4

Sensitivity (95% CI)

Specificity (95% CI)

Sensitivity (95% CI)

Specificity (95% CI)

Sensitivity (95% CI)

Specificity (95% CI)

0.60

1.000 (1.000–1.000)

0.613 (0.582–0.643)

1.000 (1.000–1.000)

0.447 (0.421–0.474)

1.000 (1.000–1.000)

0.376 (0.352–0.400)

0.61

0.998 (0.995–1.000)

0.710 (0.681–0.738)

1.000 (1.000–1.000)

0.520 (0.494–0.547)

1.000 (1.000–1.000)

0.437 (0.413–0.462)

0.62

0.994 (0.989–0.998)

0.772 (0.746–0.799)

0.999 (0.997–1.000)

0.569 (0.543–0.596)

1.000 (1.000–1.000)

0.479 (0.455–0.504)

0.63

0.983 (0.976–0.990)

0.851 (0.829–0.873)

0.999 (0.997–1.000)

0.636 (0.610–0.662)

1.000 (1.000–1.000)

0.535 (0.511–0.560)

0.64

0.964 (0.954–0.975)

0.905 (0.887–0.924)

0.998 (0.995–1.000)

0.693 (0.668–0.717)

1.000 (1.000–1.000)

0.583 (0.559–0.608)

0.65

0.928 (0.914–0.943)

0.953 (0.939–0.97)

0.993 (0.988–0.999)

0.757 (0.734–0.780)

1.000 (1.000–1.000)

0.640 (0.617–0.664)

0.66

0.861 (0.842–0.881)

0.988 (0.981–0.995)

0.978 (0.968–0.988)

0.835 (0.815–0.855)

1.000 (1.000–1.000)

0.714 (0.691–0.736)

0.67

0.769 (0.745–0.793)

0.999 (0.997–1.000)

0.950 (0.936–0.965)

0.910 (0.894–0.925)

0.998 (0.995–1.000)

0.791 (0.771–0.811)

0.68

0.769 (0.745–0.793)

0.999 (0.997–1.000)

0.912 (0.893–0.931)

0.955 (0.944–0.966)

0.994 (0.987–1.000)

0.848 (0.831–0.866)

0.69

0.769 (0.745–0.793)

0.999 (0.997–1.000)

0.834 (0.809–0.859)

0.990 (0.984–0.995)

0.972 (0.959–0.985)

0.912 (0.898–0.926)

0.70

0.768 (0.745–0.793)

0.999 (0.997–1.000)

0.834 (0.809–0.859)

0.990 (0.984–0.995)

0.937 (0.917–0.956)

0.960 (0.950–0.969)

0.71

0.769 (0.745–0.793)

0.999 (0.997–1.000)

0.834 (0.809–0.859)

0.990 (0.984–0.995)

0.845 (0.817–0.874)

0.986 (0.980–0.992)

0.72

0.769 (0.745–0.793)

0.999 (0.997–1.000)

0.834 (0.809–0.859)

0.990 (0.984–0.995)

0.735 (0.700–0.770)

0.995 (0.991–0.998)

0.73

0.769 (0.745–0.793)

0.999 (0.997–1.000)

0.834 (0.809–0.859)

0.990 (0.984–0.995)

0.735 (0.700–0.770)

0.995 (0.991–0.998)

0.74

0.769 (0.745–0.793)

0.999 (0.997–1.000)

0.834 (0.809–0.859)

0.990 (0.984–0.995)

0.735 (0.700–0.770)

0.995 (0.991–0.998)

0.75

0.769 (0.745–0.793)

0.999 (0.997–1.000)

0.834 (0.809–0.859)

0.990 (0.984–0.995)

0.735 (0.700–0.770)

0.995 (0.991–0.998)

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BMC Nephrology

ISSN: 1471-2369

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