Table 3

Concordance and agreement between the ALS test and clinical diagnosis among patients with active TB

GroupsConcordanceAgreement, Cohen's κ (SE)p Value, McNemar
All TB cases
 HIV negative68/75 (90.7%)0.766 (0.083)0.725
 HIV positive41/47 (87.2%)0.742 (0.098)0.687
Pulmonary TB
 HIV negative36/41 (87.8%)0.804 (0.093)0.625
 HIV positive29/34 (85.3%)0.861 (0.095)1.00
Pleural TB
 HIV negative32/34 (94.1%)0.882 (0.081)1.00
 HIV positive22/27 (81.5%)0.744 (0.171)1.00
Lymph node TB
 HIV negative34/36 (94.4%)0.889 (0.076)1.00
 HIV positive26/30 (86.7%)0.913 (0.085)1.00
  • ALS, Antibodies in Lymphocyte Supernatant; TB, tuberculosis.