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Stimulated TB antigen-nil IFN-γ concentration by population
| Population | Mean (IQR) IFN-γ concn (IU/ml) |
P valuea | ||
|---|---|---|---|---|
| QFT-GIT | QFT-Plus |
|||
| Tube 1 | Tube 2 | |||
| Total study population (n = 262) | 0.016 (−0.08, 0.29) | 0.018 (−0.08, 0.37) | 0.043 (−0.15, 0.46) | 0.27 |
| Non-NTM subgroup (n = 211) | 0.046 (−0.05, 0.22) | 0.021 (−0.08, 0.32) | 0.051 (−0.14, 0.34) | 0.28 |
| NTM subgroup (n = 51) | 0.015 (−0.05, 0.02) | 0.005 (−0.04, 0.03) | 0.011 (−0.03, 0.03) | 0.77 |
P value for the interassay comparison between tube 1 and tube 2.
