Volume 24, Number 3—March 2018
Research
Characteristics Associated with Negative Interferon-γ Release Assay Results in Culture-Confirmed Tuberculosis Patients, Texas, USA, 2013–2015
Duc T. Nguyen, Larry D. Teeter, Julie Graves, and Edward A. Graviss
Table 1
Characteristics of 1,487 culture-confirmed TB patients with negative and positive IGRA results, Texas, USA, 2013–2015*
| Characteristic | Value |
|---|---|
| Age, y, median (IQR) | 47.0 (30.0–61.0) |
| Age >60 y |
402 (27.0) |
| Sex | |
| M | 942 (63.3) |
| F |
545 (36.7) |
| Race/Ethnicity | |
| Non-Hispanic white | 152 (10.2) |
| Black | 275 (18.5) |
| Hispanic | 762 (51.2) |
| Asian | 288 (19.4) |
| Other |
10 (0.7) |
| Foreign-born | 897 (60.3) |
| Resident of long-term care facility | 20 (1.3) |
| Homeless | 100 (6.7) |
| Excess alcohol user | 257 (17.3) |
| Injection drug user |
38 (2.6) |
| Chest radiograph result | |
| Normal | 160 (10.8) |
| Consistent with TB | 1,240 (83.4) |
| Unknown/Not done |
87 (5.9) |
| TB site | |
| Pulmonary | 1,136 (76.4) |
| Extrapulmonary | 196 (13.2) |
| Both |
155 (10.4) |
| HIV status | |
| Negative | 1,279 (86.0) |
| Positive | 90 (6.1) |
| Unknown |
118 (7.9) |
| MDR | 13 (0.9) |
| Days from diagnosis to treatment, median (IQR) | 3.0 (0–13.0) |
| Died within 1 year of TB diagnosis | 105 (7.1) |
*Values are no. (%) unless otherwise indicated. Percentages were calculated on the basis of the number of patients with data available. IGRA, interferon-γ release assay; IQR, interquartile range; MDR, multidrug resistance; TB, tuberculosis.
Page created: February 15, 2018
Page updated: February 15, 2018
Page reviewed: February 15, 2018
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