Table 3.
The result of univariate logistic regression, 2005–2017
| Variable | Case (n = 368) | Control (n = 736) | β | SE | P | OR | 95%CI | |
|---|---|---|---|---|---|---|---|---|
| Marital status (control=single) | 96 (25.3) | 193 (26.2) | 0.142 | |||||
| Married | 266 (72.3) | 536 (72.8) | 0.096 | 0.222 | 0.666 | 1.100 | 0.713 | 1.699 |
| Divorced | 9 (2.4) | 7 (1.0) | 1.111 | 0.568 | 0.050 | 3.038 | 0.998 | 9.250 |
| Occupation (control=worker) | 59 (16.0) | 111 (15.1) | <0.001 | |||||
| Farmer | 46 (12.5) | 119 (16.2) | -0.321 | 0.255 | 0.208 | 0.725 | 0.440 | 1.196 |
| Merchant and commercial | 95 (25.8) | 125 (17.0) | 0.347 | 0.219 | 0.113 | 1.415 | 0.921 | 2.175 |
| Government staff | 40 (10.9) | 100 (13.6) | -0.310 | 0.263 | 0.238 | 0.733 | 0.438 | 1.228 |
| Student | 25 (6.8) | 84 (11.4) | -1.369 | 0.422 | 0.001 | 0.254 | 0.111 | 0.582 |
| Staff | 38 (10.3) | 100 (13.6) | -0.393 | 0.267 | 0.142 | 0.675 | 0.400 | 1.140 |
| Others | 65 (17.7) | 97 (13.2) | 0.186 | 0.239 | 0.438 | 1.204 | 0.753 | 1.925 |
| Education (control=primary school or less) | 34 (9.2) | 38 (5.2) | 0.001 | |||||
| Middle school | 123 (33.4) | 214 (29.1) | -0.510 | 0.269 | 0.058 | 0.601 | 0.355 | 1.017 |
| High school | 107 (29.1) | 214 (29.1) | -0.698 | 0.280 | 0.013 | 0.498 | 0.288 | 0.861 |
| > Bachelors | 104 (28.3) | 270 (36.7) | -1.038 | 0.288 | <0.001 | 0.354 | .201 | 0.623 |
| Razor reuse | 201 (54.6) | 332 (45.1) | 0.520 | 0.151 | 0.001 | 1.682 | 1.252 | 2.261 |
| Ear piercing | 129 (35.1) | 165 (22.4) | 0.997 | 0.188 | <0.001 | 2.711 | 1.877 | 3.916 |
| Tattoo | 17 (4.6) | 11 (1.5) | 1.185 | 0.400 | 0.003 | 3.270 | 1.492 | 7.167 |
| Eyebrow tattooing | 44 (12.0) | 70 (9.5) | .304 | 0.223 | 0.174 | 1.355 | 0.875 | 2.100 |
| Dental operation | 133 (36.1) | 207 (28.1) | 0.381 | 0.139 | 0.006 | 1.463 | 1.114 | 1.921 |
| Acupuncture | 58 (15.8) | 88 (12.0) | 0.334 | 0.187 | 0.074 | 1.397 | 0.968 | 2.016 |
| Transfusion | 10 (2.7) | 18 (2.4) | 0.105 | 0.394 | 0.789 | 1.111 | 0.513 | 2.407 |
| Body fluid contact | 33 (9.0) | 52 (7.1) | 0.244 | 0.228 | 0.284 | 0.783 | 0.501 | 1.225 |
| Paid sex | 41 (11.1) | 34 (4.6) | 1.067 | 0.262 | <0.001 | 2.907 | 1.738 | 4.861 |
| Number of sex partner (control=0) | 24 (6.5) | 94 (12.8) | <0.001 | |||||
| One statilzed sex partner | 157 (42.7) | 476 (64.7) | 0.613 | 0.324 | 0.058 | 1.847 | 0.979 | 3.483 |
| ≥2 | 187 (50.8) | 166 (22.6) | 1.957 | 0.333 | <0.001 | 7.079 | 3.685 | 13.599 |
| Condom (control=always) | 84 (22.8) | 234 (31.8) | 0.001 | |||||
| occasional | 143 (38.9) | 231 (31.4) | 0.728 | 0.194 | <0.001 | 2.071 | 1.414 | 3.031 |
| never | 141 (38.3) | 271 (36.8) | 0.519 | 0.187 | 0.006 | 1.680 | 1.163 | 2.425 |
| Sexual contact with syphilis (control=yes) | 19 (5.2) | 3 (0.4) | <0.001 | |||||
| No | 275 (74.7) | 690 (93.8) | -2.539 | 0.621 | <0.001 | 0.079 | 0.023 | 0.267 |
| Uncertain | 74 (20.1) | 43 (5.8) | -0.936 | 0.664 | 0.159 | 0.392 | 0.107 | 1.442 |
Abbreviations: β partial regression coefficient, SE Standard Error, P trend significance, OR The crude odds ratios, CI confidence interval