Characteristic | No of participants | No of infections (%) | cOR (95% CI) | aOR (95% CI) |
Township | ||||
A | 524 | 4 (0.8) | 0.12 (0.042 to 0.34)** | |
B | 520 | 11 (2.1) | 0.34 (0.17 to 0.67)** | |
C | 967 | 23 (2.4) | 0.38 (0.22 to 0.65)** | |
D | 547 | 33 (6) | 1 | |
Sex | ||||
Female | 1664 | 17 (1) | 1 | 1 |
Male | 894 | 54 (6) | 6.23 (3.59 to 10.81)** | 3.30 (1.80 to 6.07)** |
Age (years) | ||||
14–24 | 409 | 4 (1) | 0.23 (0.078 to 0.66)** | |
25–34 | 577 | 24 (4.2) | 1 | |
35–44 | 760 | 31 (4.1) | 0.98 (0.57 to 1.69) | |
45–54 | 545 | 10 (1.8) | 0.43 (0.20 to 0.91)* | |
≥55 | 267 | 2 (0.7) | 0.17 (0.41 to 0.74)* | |
Ethnicity | ||||
Han | 70 | 1 (1.4) | ||
Yi | 2481 | 70 (2.8) | ||
Other | 3 | 0 (0.0) | ||
Education | ||||
Illiterate | 1656 | 38 (2.3) | 1 | |
Primary school or above | 900 | 33 (3.7) | 1.62 (1.01 to 2.60)* | |
Occupation | ||||
Farmer | 2344 | 70 (3) | ||
Student | 155 | 0 (0.0) | ||
Other | 37 | 1 (2.7) | ||
Annual income | ||||
<1000 | 405 | 12 (3) | 1 | |
1000–2999 | 906 | 28 (3.1) | 1.04 (0.53 to 2.08) | |
3000–4999 | 590 | 18 (3.1) | 1.03 (0.49 to 2.16) | |
5000–9999 | 309 | 8 (2.6) | 0.87 (0.35 to 2.16) | |
≥10 000 | 324 | 5 (1.5) | 0.51 (0.18 to 1.47) | |
Marital status | ||||
Unmarried | 420 | 4 (1.0) | 0.28 (0.10 to 0.78)* | 0.27 (0.093 to 0.80)* |
Married | 1913 | 63 (3.3) | 1 | 1 |
Divorced/Widowed | 222 | 4 (1.8) | 0.54 (0.19 to 1.50) | 0.45 (0.15 to 1.42) |
Ever using injection drug | ||||
No | 2469 | 36 (1.5) | 1 | 1 |
Yes | 89 | 35 (39.3) | 43.80 (25.58 to 75.00)** | 28.65 (15.9 to 51.64)** |
Having multiple sexual partners | ||||
No | 2163 | 40 (1.8) | 1 | |
Yes | 395 | 31 (7.8) | 4.52 (2.79 to 7.32)** | |
Condom use | ||||
Always | 629 | 15 (2.4) | 0.93 (0.50 to 1.70) | |
Occasionally | 489 | 19 (3.9) | 1.53 (0.87 to 2.69) | |
Never | 1440 | 37 (2.6) | 1 | |
Ever having blood transfusion | ||||
No or unknown | 2534 | 67 (2.6) | 1 | 1 |
Yes | 24 | 4 (16.7) | 7.36 (2.45 to 22.14)** | 7.64 (1.94 to 30.16)** |
HIV infection status | ||||
Negative | 2428 | 40 (1.6) | 1 | |
Positive | 129 | 31 (24.0) | 18.88 (11.33 to 31.47)** |
*p<0.05; **p<0.01.
aOR, adjusted OR; cOR, crude OR.