Table 1 Characteristics of the study population.
Variables | n | %* |
|---|---|---|
Total | 4422 | 100 |
Gender | ||
Male | 2674 | 60.47 |
Female | 1748 | 39.53 |
Age | 29.46 ± 8.53# | |
16–19 years | 274 | 6.20 |
20–29 years | 2431 | 54.98 |
30–39 years | 1065 | 24.08 |
≥40 years | 652 | 14.75 |
Ethnicity | ||
Han | 4322 | 97.74 |
Others | 100 | 2.26 |
Highest education level | ||
Primary school or lower | 220 | 4.98 |
Middle school | 1822 | 41.25 |
High school | 1573 | 35.61 |
College and higher | 802 | 18.16 |
Current marriage status | ||
Married | 2271 | 51.36 |
Unmarried | 2151 | 48.64 |
Household per capita income | ||
<13000 RMB | 517 | 11.69 |
≥13000 RMB | 3905 | 88.31 |
Work type of migrant worker | ||
Manufacturing | 3689 | 83.42 |
Administration | 466 | 10.54 |
Service | 267 | 6.04 |
Residence registered place | ||
East China | 1094 | 24.74 |
Middle China | 2104 | 47.58 |
West China | 1224 | 27.68 |
Smoking | ||
Never smoke | 3142 | 71.05 |
Current and Ever smoked | 1280 | 28.95 |
Drinking | ||
Yes | 1300 | 29.40 |
No | 3122 | 70.60 |
BCG scars | ||
Absent | 2402 | 54.32 |
Present | 2020 | 45.68 |
Body mass index | ||
<18.5 | 593 | 13.41 |
18.5–24 | 2766 | 62.65 |
24–28 | 830 | 18.77 |
≥28 | 233 | 5.27 |
With a history of close contact with TB patient | ||
No | 4237 | 95.82 |
Yes | 185 | 4.18 |
With a history of immune system disease | ||
No | 4394 | 99.36 |
Yes | 28 | 0.64 |
With suspect PTB symptoms | ||
No | 4335 | 98.03 |
Yes | 87 | 1.97 |
QFT-GIT | ||
Negative | 3611 | 81.66 |
Positive | 790 | 17.87 |
Indeterminate | 21 | 0.47 |
