Table 3. Tests for TB infection performed and test results by immigration classification in migrant children, Harris County, Texas, USA, 2010–2015*.
| Category |
Immigration classification | OR (95% CI) |
p value†
|
| Higher-risk groups |
|
Lower-risk groups |
||||||
|---|---|---|---|---|---|---|---|---|
| Refugee, n = 4,246 |
Asylee, n = 173 |
VHT, n = 16 |
Parolee, n = 851 |
SIV holder, n = 704 |
||||
| Test(s) performed |
|
|
|
|
|
|
|
|
| TST alone |
1,381 (32.5) |
30 (17.3) |
1 (6.3) |
|
168 (19.7) |
300 (42.6) |
1.08 (0.96–1.23) |
<0.001 |
|
IGRA alone |
2,558 (60.2) |
137 (79.2) |
15 (93.8) |
|
642 (75.4) |
349 (49.6) |
1.12 (0.99–1.26) |
|
|
TST and IGRA |
204 (4.8) |
4 (2.3) |
0 |
|
22 (2.6) |
29 (4.1) |
1.45 (1.06–1.98) |
|
|
Result
|
|
|
|
|
|
|
|
|
|
TST positive |
196/1,589 (12.3) |
4/35 (11.4) |
0 |
|
7/190 (3.7) |
25/329 (7.6) |
2.14 (1.45–3.15) |
<0.001 |
|
IGRA positive |
142/2,819 (5.0) |
5/141 (3.5) |
0 |
|
5/664 (0.8) |
9/389 (2.3) |
3.84 (2.21–6.68) |
<0.001 |
| Total positive tests | 311 (7.3) | 9 (5.2) | 0 | 10 (1.2) | 34 (4.8) | 2.67 (1.94–3.68) | <0.001 | |
*Values are no. (%) or no. positive/no. tested (%) except as indicated. IGRA, interferon gamma release assay; OR, odds ratio; SIV, special immigrant visa; TST, tuberculin skin test; VHT, victim of human trafficking. †p value using χ2 test.