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Table 3 Validity measures by laboratory serum sodium values

From: Sensitivity of International Classification of Diseases codes for hyponatremia among commercially insured outpatients in the United States

 

Serum Sodium (mmol/L)

 

< 136

≤ 133

≤ 130

≤ 125

Sensitivity

3.46

7.50

13.85

29.57

   False-negative rate

96.54

92.50

86.15

70.43

Specificity

99.95

99.94

99.92

99.90

   False-positive rate

0.05

0.06

0.08

0.10

Positive predictive value

62.64

48.74

30.00

10.42

Negative predictive value

97.93

99.28

99.78

99.97

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BMC Nephrology

ISSN: 1471-2369

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