Correlations of sociodemographic characteristics with commercial sex with old male clients (OMCs) among low-tier FSWs (N=2647)
| Variable | Total (%) | OMCs (%) | Crude OR (95% CI)* | P value |
| Age (years) | ||||
| ≤25 | 843 (31.8) | 300 (35.6) | 1 | |
| 26–35 | 1071 (40.5) | 433 (40.4) | 1.23 (1.02 to 1.48) | 0.031 |
| ≥36 | 726 (27.4) | 432 (59.5) | 2.67 (2.17 to 3.26) | 0.000 |
| Residence | ||||
| Local area | 270 (10.2) | 126 (46.7) | 1 | |
| Other area in this province | 307 (11.6) | 134 (43.6) | 0.89 (0.64 to 1.23) | 0.467 |
| Other province | 2070 (78.2) | 905 (43.7) | 0.89 (0.69 to 1.15) | 0.359 |
| Education | ||||
| Primary school or below | 974 (36.8) | 507 (52.1) | 1 | |
| Junior high school | 1405 (53.1) | 573 (40.8) | 0.63 (0.54 to 0.75) | 0.000 |
| High school or above | 262 (9.9) | 83 (31.7) | 0.43 (0.32 to 0.57) | 0.000 |
| Marital status | ||||
| Unmarried | 762 (28.8) | 292 (38.3) | 1 | |
| Married/cohabit | 1652 (62.4) | 751 (45.5) | 1.34 (1.13 to 1.60) | 0.001 |
| Widowed/divorced | 229 (8.7) | 121 (52.8) | 1.80 (1.34 to 2.43) | 0.000 |
| Income per month (¥) | ||||
| <¥3000 | 746 (28.2) | 333 (44.6) | 1 | |
| ¥3000–¥4000 | 1068 (40.3) | 479 (44.9) | 1.01 (0.84 to 1.22) | 0.929 |
| >¥4000 | 748 (28.3) | 326 (43.6) | 0.96 (0.78 to 1.18) | 0.681 |
| Location of sampling | ||||
| Street | 413 (15.6) | 224 (54.2) | 1 | |
| Hair salon | 1682 (63.5) | 714 (42.4) | 0.62 (0.50 to 0.77) | 0.000 |
| Roadside shop | 276 (10.4) | 163 (59.1) | 1.22 (0.89 to 1.66) | 0.212 |
| Other | 271 (10.2) | 64 (23.6) | 0.26 (0.19 to 0.37) | 0.000 |
*The percentages may not sum to 100% because of missing data.
FSWs, female sex workers.