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Table 2 Performance of potential diagnostic cut-offs

From: Prospective study of the serum Aspergillus-specific IgG, IgA and IgM assays for chronic pulmonary aspergillosis diagnosis

Assay (Unit) Diagnostic cut-off Sensitivity Specificity Youden’s J statistic
IgG (AU/mL) 70.3 81.0% 83.1% 0.641
82.7 78.6% 91.2% 0.698
89.3 78.6% 94.4% 0.729
91.8 76.2% 94.4% 0.706
118.6 71.4% 96.9% 0.683
IgA (U/mL) 6.1 71.4% 78.1% 0.496
7.2 69.0% 82.5% 0.515
8.2 64.3% 89.4% 0.537
9.8 57.1% 93.7% 0.509
10.7 52.4 95.0% 0.474
IgM (AU/mL) 53.3 61.9% 38.7% 0.007
66.5 52.4% 48.1% 0.005
73.3 50.0% 53.7% 0.038
81.9 45.2% 57.5% 0.027
84.0 42.9% 59.4% 0.022
GM (ug/L) 0.40 76.2% 45.6% 0.218
0.45 73.8% 51.2% 0.251
0.50 71.4% 58.1% 0.296
0.60 45.2% 65.0% 0.102
0.70 33.3% 73.1% 0.065