| Age (years) | | | | |
| <20 | 5209 (25.1) | 1817 (25.7) | 1791 (26.1) | 1601 (23.4) |
| 20–24 | 8791 (42.3) | 3090 (43.7) | 2887 (42.0) | 2814 (41.2) |
| ⩾25 | 6773 (32.6) | 2158 (30.5) | 2197 (32.0) | 2418 (35.4) |
| Education | | | | |
| ⩽Primary school | 4921 (23.7) | 1640 (23.2) | 1612 (23.5) | 1669 (24.4) |
| Junior high school | 1960 (57.6) | 4099 (58.0) | 4000 (58.2) | 3861 (56.5) |
| ⩾Senior high school | 3890 (18.7) | 1327 (18.8) | 1262 (18.4) | 1301 (19.0) |
| Ethnicity | | | | |
| Han | 19766 (95.2) | 6819 (96.5) | 6584 (95.8) | 6363 (93.2) |
| Others | 1004 (4.8) | 247 (3.5) | 291 (4.2) | 466 (6.8) |
| Types of working venue | | | | |
| Sauna, club or karaoke bar | 9221 (44.4) | 3346 (47.3) | 3139 (45.7) | 2736 (40.0) |
| Hair salon | 7762 (37.4) | 2135 (30.2) | 2734 (39.8) | 2893 (42.3) |
| Non-venue based (eg street workers) | 3792 (18.3) | 1586 (22.4) | 1002 (14.6) | 1204 (17.6) |
| Age at first sex (years) | | | | |
| <17 | 3099 (15.0) | 1018 (14.5) | 1190 (17.3) | 891 (13.1) |
| 17–19 | 12365 (59.7) | 4264 (60.6) | 3998 (58.2) | 4103 (60.2) |
| ⩾20 | 5250 (25.3) | 1750 (24.9) | 1683 (24.5) | 1817 (26.7) |
| Duration of sex work | | | | |
| <1 year | 5775 (28.0) | 2158 (30.7) | 1889 (27.7) | 1728 (25.5) |
| 1 year | 6290 (30.5) | 2322 (33.0) | 2127 (31.2) | 1841 (27.2) |
| 2–3 years | 5546 (26.9) | 1861 (26.4) | 1814 (26.6) | 1871 (27.7) |
| ⩾4 years | 3013 (14.6) | 696 (9.9) | 991 (14.5) | 1326 (19.6) |