Characteristics of international students (n=607)
| Total (n, %) | Reporting having no sex during studying in China (n=411) (n, %) | Reporting having had sex during studying in China (n=196) (n, %) | χ2 | P value | |
| Age | 18.20 | <0.001 | |||
| 18–30 | 480 (79.1) | 345 (83.9) | 135 (68.9) | ||
| >30 | 127 (20.9) | 66 (16.1) | 61 (31.1) | ||
| Region of origin | 28.41 | <0.001 | |||
| Africa | 125 (20.6) | 79 (19.2) | 46 (23.5) | ||
| Asia | 454 (74.8) | 325 (79.1) | 129 (65.8) | ||
| Europe | 20 (3.3) | 5 (1.2) | 15 (7.7) | ||
| Oceania | 2 (0.3) | 1 (0.2) | 1 (0.5) | ||
| South and North America | 6 (1.0) | 1 (0.2) | 5 (2.6) | ||
| University | 23.10 | 0.006 | |||
| A University | 165 (27.2) | 91 (22.1) | 74 (37.8) | ||
| B University | 63 (10.4) | 47 (11.4) | 16 (8.2) | ||
| C University | 87 (14.3) | 69 (16.8) | 18 (9.2) | ||
| D University | 21 (3.5) | 15 (3.6) | 6 (3.1) | ||
| E University | 51 (8.4) | 32 (7.8) | 19 (9.7) | ||
| F University | 41 (6.8) | 30 (7.3) | 11 (5.6) | ||
| G University | 90 (14.8) | 60 (14.6) | 30 (15.3) | ||
| H University | 60 (9.9) | 45 (10.9) | 15 (7.7) | ||
| I University | 16 (2.6) | 11 (2.7) | 5 (2.6) | ||
| J University | 13 (2.1) | 11 (2.7) | 2 (1.0) | ||
| Gender | 0.69 | 0.408 | |||
| Female | 206 (33.9) | 144 (35.0) | 62 (31.6) | ||
| Male | 401 (66.1) | 267 (65.0) | 134 (68.4) | ||
| Married status | 32.98 | <0.001 | |||
| Married | 93 (15.3) | 373 (90.8) | 141 (71.9) | ||
| Single | 514 (84.7) | 38 (9.2) | 55 (28.1) | ||
| Living site | 0.31 | 0.578 | |||
| On campus | 524 (86.3) | 357 (86.9) | 167 (85.2) | ||
| Out of campus | 83 (13.7) | 54 (13.1) | 29 (14.8) | ||
| Major | 9.29 | 0.002 | |||
| Medicine | 351 (57.8) | 255 (62.0) | 96 (49.0) | ||
| Others | 256 (42.2) | 156 (38.0) | 100 (51.0) | ||
| Studying programme | 30.12 | <0.001 | |||
| Bachelor | 412 (67.9) | 308 (75.1) | 104 (53.1) | ||
| Master | 158 (26.0) | 86 (21.0) | 72 (36.7) | ||
| PhD | 37 (6.1) | 16 (3.9) | 20 (10.2) | ||
| Tuition source | 14.97 | 0.001 | |||
| By Chinese government | 258 (42.5) | 153 (63.9) | 105 (53.6) | ||
| By their country government | 18 (3.0) | 12 (5.0) | 6 (3.1) | ||
| By themselves | 331 (54.5) | 246 (31.0) | 85 (43.4) | ||
| Time spent in China (years) | 19.26 | <0.001 | |||
| <1 | 7 (1.2） | 6 (1.5) | 1 (0.5) | ||
| 1–2 | 428 (70.5) | 311 (75.7) | 117 (59.7) | ||
| >2 | 172 (28.3) | 94 (22.9) | 78 (39.8) | ||
| Medical insurance | 0.07 | 0.789 | |||
| Yes | 423 (69.7) | 285 (69.3) | 138 (70.4) | ||
| No | 184 (30.3) | 126 (30.7) | 58 (29.6) |