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Table 2 Diagnostic accuracy of the Kramer’ method

From: Reliability of visual assessment of neonatal jaundice among neonates of black descent: a cross-sectional study from Tanzania

TSB outcome Kramer outcome Total p. value
Positive Negative
Jaundiced 141(70.5) 59(29.5) 200 0.001
Not jaundiced 16(13.91) 99(86.1) 115  
Measures of diagnostic performance Value
Sensitivity (95% CI) (%) 70.5(63.84 to 76.38)
Specificity (95% CI) (%) 86.1(78.59 to 91.25)
Positive predictive value (95% CI) (%) 89.8(84.09 to 93.06)
Negative predictive value 95% CI) (%) 62.6(54.89 to 69.82)
Diagnostic accuracy (95% CI) 0.761
Likelihood ratio of a positive test 5.07
Likelihood ratio of a negative test 0.34
Cohen’s kappa, p value 52.4, < 0001