TABLE 1.

Evaluation of IgM in saliva and IgA in serum and saliva as diagnostic tools compared to IgM in serum from group 1 (single samples categorized for serum IgM status)

Immunoglobulin groupIgM serumSensitivitySpecificityConcordancePPVaNPVb
No. positiveNo. negativeTotal
Saliva IgM
    Positive65614790.392.091.291.590.8
    Negative769
Serum IgA
    Positive681914794.474.784.478.293.3
    Negative456
Saliva IgA
    Positive512414770.868.069.468.070.8
    Negative2151
  • a PPV, positive predictive value.

  • b NPV, negative predictive value.