Table 2 Factors associated with positive of the T-SPOT.TB diagnostic tests in smear-negative PTB patients.
Factors | Total N = 858 | No.(%) with positive results | Univariate OR (95% CI) | Multivariate adjusted OR (95% CI) | P |
|---|---|---|---|---|---|
Gender | |||||
Male | 584 | 508(87.0) | Reference | ||
Female | 274 | 234(85.4) | 0.875(0.579–1.323) | ||
Age | |||||
<45years | 469 | 425(90.6) | 2.555(1.607–4.061) | 2.132(1.302–3.489) | 0.003 |
45–59years | 193 | 162(83.9) | 1.382(0.825–2.315) | 1.287(0.763–2.171) | 0.345 |
≥60years | 196 | 155(79.1) | Reference | Reference | |
Smoking | |||||
No | 612 | 526(85.9) | Reference | ||
Yes | 246 | 216(87.8) | 1.177(0.755–1.837) | ||
Diabetes | |||||
No | 794 | 687(86.5) | Reference | ||
Yes | 64 | 55(85.9) | 0.952(0.457–1.982) | ||
BMI | |||||
<18.5 | 174 | 158(90.8) | Reference | ||
≥18.5 | 684 | 584(85.4) | 0.591(0.339–1.031) | ||
Contact of TB | |||||
No | 907 | 694(86.0) | Reference | ||
Yes | 51 | 48(94.1) | 2.605(0.798–8.506) | ||
BCG | |||||
No | 442 | 371(83.9) | Reference | ||
Yes | 416 | 351(84.3) | 1.078(0.757–1.354) | ||
TB Category | |||||
New | 715 | 626(87.6) | Reference | Reference | 0.211 |
Retreatment | 143 | 116(81.1) | 0.611(0.380–0.981) | 0.730(0.446–1.195) | |
Course | |||||
<1 month | 236 | 210(89.0) | Reference | ||
≥1month | 622 | 532(85.5) | 0.732(0.460–1.165) | ||
Albumin | |||||
Decreased | 145 | 114(78.6) | Reference | Reference | 0.046 |
Normal | 713 | 628(88.1) | 2.009(1.272–3.173) | 1.629(1.008–2.631) | |
