Table 2.
Characteristics of TB patients associated with QFT-G results
| QFT-G positive |
QFT-G negative |
P value | ORadj (95%CI) | Variable(s) adjusted for in final model |
|
|---|---|---|---|---|---|
| (n=119) | (n=50) | ||||
| Sociodemographics | n(row %)* | n(row %)* | |||
| Country of enrollment | 0.16 | ||||
| Mexico-Tamaulipas | 88 (67.7) | 42 (32.3) | |||
| US-Texas | 31 (79.5) | 8 (20.5) | |||
| BCG vaccination | 0.06 | Age, COE | |||
| Yes | 75 (65.8) | 39 (34.2) | 0.4 (0.2, 1.2) | ||
| No | 32 (82.1) | 7 (17.9) | 1 | ||
| White Hispanic | 118 (70.2) | 50 (29.8) | 0.51 | ||
| Age | 0.58 | ||||
| 20–35 | 42 (67.7) | 20 (32.3) | |||
| 36–59 | 58 (69.9) | 25 (30.1) | |||
| 60+ | 19 (79.2) | 5 (20.8) | |||
| Gender | 0.24 | ||||
| Male | 77 (67.5) | 37 (32.5) | |||
| Female | 42 (76.4) | 13 (23.6) | |||
| TB characteristics at enrollment | |||||
| Smear result | 0.56 | ||||
| Positive | 107 (69.5) | 47 (30.5) | |||
| Negative | 11 (78.6) | 3 (21.4) | |||
| Culture performed | 0.049 | COE | |||
| Yes | 65 (77.4) | 19 (22.6) | 1.8 (0.8, 3.8) | ||
| No | 54 (63.5) | 31 (36.5) | 1 | ||
| Days of anti-TB treatment | 0.18 | ||||
| None | 33 (78.6) | 9 (21.4) | |||
| Between 1 and 7 | 86 (67.7) | 41(32.3) | |||
| Diabetes and body-mass index | |||||
| Diabetes | 0.01 | Age, BMI | |||
| Yes | 59 (80.8) | 14 (19.2) | 2.4 (1.1, 5.0) | ||
| No | 60 (62.5) | 36 (37.5) | 1 | ||
| HbA1c ≥ 6.5% | 0.007 | Age, BMI | |||
| Yes | 47 (83.9) | 9 (16.1) | 2.7 (1.2, 6.2)† | ||
| No | 72 (63.7) | 41 (36.3) | 1 | ||
| Hyperglycemia | 0.003 | BMI, COE | |||
| Yes | 41 (87.2) | 6 (12.8) | 3.7 (1.4, 9.7) | ||
| No | 78 (63.9) | 44 (36.1) | 1 | ||
| Body mass index | 0.049 | ||||
| Underweight | 19 (57.6) | 14 (42.4) | 0.5 (0.2, 1.1) | ||
| Normal weight | 65 (69.1) | 29 (30.9) | 1 | None | |
| Overweight or obese | 35 (83.3) | 7 (16.7) | 2.6 (1.0, 6.2) | ||
| Risks for TB other than diabetes | |||||
| Alcohol abuse | 0.28 | ||||
| Yes | 20 (62.5) | 12 (37.5) | |||
| No | 99 (72.3) | 38 (27.7) | |||
| Drug abuse | 0.83 | ||||
| Yes | 28 (71.8) | 11 (28.2) | |||
| No | 91 (70) | 39 (30) | |||
| History of incarceration | 1.00 | ||||
| Yes | 7 (70) | 3 (30) | |||
| No | 112 (70.4) | 47 (29.6) | |||
| HIV positive | 1.00 | ||||
| Yes | 4 (80) | 1 (20) | |||
| No | 115 (70.1) | 49 (29.9) | |||
*
Due to missing demographic information (BCG n=153; Smear n=168), totals for these variables will not sum to the total sample; Variables initially controlled for in multivariate models prior to backward elimination included all the variable under sociodemographics, risks for TB other than diabetes, and body-mass index; COE, country of enrollment; QTF-G, QuantiFERON®-TB Gold