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Table 3 Concordance between the three diagnostic tests described in all subjects, HIV seropositive subjects and HIV seronegative subjects

From: Diagnosis of latent tuberculosis infection among HIV discordant partners using interferon gamma release assays

Test in HIV positive subjects (n = 298) Agreement (%) κ 95% Confidence Interval
TST vs QFT 75% 0.53 0.43, 0.64
TST vs TSPOT 76% 0.4 0.3, 0.52
TSPOT vs QFT 74% 0.37 0.26, 0.49
Test in HIV negative subjects (n = 298) Agreement (%) κ 95% Confidence Interval
TST vs QFT 72% 0.44 0.33, 0.55
TST vs TSPOT 70% 0.3 0.2, 0.4
TSPOT vs QFT 75% 0.46 0.35, 0.57
  1. TST: Tuberculin Skin Test
  2. QFT: Quantiferon-TB Gold In Tube Test
  3. TSPOT: TSPOT.TB Test
  4. HIV: Human Immunodeficiency Virus