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Multivariate analysis of risk factors associated with an Invalid TSPOT or Indeterminate QFT-3G (n = 51)
| Risk factor | Odds Ratio and 95% Confidence Interval |
|---|---|
| Age > 40 years | 0.9 (0.5, 1.6) |
| African-American Race | 0.8 (0.3, 1.7) |
| Male gender | 0.5 (0.2, 1.0) |
| CD4 count ≤ 200 cells/μl | 3.6 (1.9, 6.8) |
QFT-3G = QuantiFERON-TB Gold in Tube
TSPOT = T-SPOT. TB
