Volume 26, Number 3—March 2020
Research
High Prevalence of and Risk Factors for Latent Tuberculosis Infection among Prisoners, Tianjin, China
Guoqin Zhang, Yuhua Zhang, Da Zhong, Sukai Meng, Liqun An, Wenliang Wei, Zhi Zhang, Yanyong Fu, and Xiexiu Wang
Table 2
Comparison of characteristics between IGRA-seropositive and IGRA-seronegative prisoners, Tianjin, China*
| Characteristic | No. (%) seropositive | No. (%) seronegative | Total | p value by χ2 test |
|---|---|---|---|---|
| Age, y | ||||
| <25 | 14 (2.8) | 60 (13.0) | 74 | <0.01 |
| 25–34 | 197 (39.5) | 226 (49.1) | 423 | |
| 35–44 | 168 (33.7) | 119 (25.9) | 287 | |
| >45 |
120 (24.0) |
55 (12.0) |
175 |
|
| Ethnicity | ||||
| Han | 470 (94.2) | 443 (96.3) | 913 | 0.13 |
| Other |
29 (5.8) |
17 (3.7) |
46 |
|
| Education level | ||||
| Primary school | 172 (34.5) | 149 (32.4) | 321 | 0.70 |
| Middle school | 233 (46.7) | 216 (47) | 449 | |
| High school |
94 (18.8) |
95 (20.7) |
189 |
|
| Residence | ||||
| Local | 220 (44.1) | 213 (46.3) | 433 | 0.49 |
| Migrant |
279 (55.9) |
247 (53.7) |
526 |
|
| Employment | ||||
| No | 425 (85.2) | 399 (86.7) | 824 | 0.49 |
| Yes |
74 (14.8) |
61 (13.3) |
135 |
|
| BMI† | ||||
| Abnormal: >25–<18.5 | 147 (29.5) | 137 (29.8) | 284 | 0.91 |
| Normal: 18.5–25.0 |
352 (70.5) |
323 (70.2) |
675 |
|
| Contact history | ||||
| No | 415 (83.2) | 388 (84.3) | 803 | 0.62 |
| Yes |
84 (16.8) |
72 (15.7) |
156 |
|
| Concurrent condition‡ | ||||
| No | 403 (80.8) | 395 (85.9) | 798 | 0.03 |
| Yes |
96 (19.2) |
65 (14.1) |
161 |
|
| Mycobacterium bovis BCG scar | ||||
| No | 180 (36.1) | 206 (44.8) | 385 | <0.01 |
| Yes |
319 (63.9) |
254 (55.2) |
573 |
|
| History of incarceration | ||||
| No | 315 (63.1) | 368 (80.0) | 683 | <0.01 |
| Yes |
184 (36.9) |
92 (20.0) |
276 |
|
| Current duration of incarceration, y | ||||
| <3.9 | 227 (45.5) | 236 (51.3) | 463 | 0.07 |
| >3.9 |
272 (54.5) |
224 (48.7) |
496 |
|
| Facility-specific TB incidence, cases/100,000 persons§ | ||||
| Low | 173 (34.7) | 195 (42.4) | 368 | 0.01 |
| Medium | 220 (44.1) | 197 (42.8) | 417 | |
| High | 106 (21.2) | 68 (14.8) | 174 | |
*BMI, body mass index; TB, tuberculosis.
†By World Health Organization standard (13).
‡Chronic diseases, including diabetes, silicosis, hypertension, kidney disease.
§The 2 low-incidence prisons reported 603.0 and 649.9 TB cases/100,000 persons, the 2 medium-incidence prisons 892.7 and 944.6 cases/100,000 persons, and the high-background prison 1,945.2 cases/100,000 persons.
Page created: February 20, 2020
Page updated: February 20, 2020
Page reviewed: February 20, 2020
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