Table 5 The degree of agreement (kappa) between various tests when carried out at cut-off points deemed to return the maximum sum of sensitivity and specificity, as determined by receiver operating characteristic curves [42]. Also shown are the McNemar’s χ2 statistics comparing the sensitivity and specificity of the tests. McNemar’s test did not return a result when comparing the Sp of GGT levels and the ELISA as the tests returned the exact same results in unaffected animals –the specificity was identical

From: Comparison of rapid laboratory tests for failure of passive transfer in the bovine