Table 1 The socio-demographic characteristics of participants before and after PSM
Variables | N (%) | Before PSM analysis (N = 2892) | χ2 | P | After PSM analysis (N = 408) | χ2 | P | ||
|---|---|---|---|---|---|---|---|---|---|
Sexual minorities (N = 204) | None-sexual minorities (N = 2688) | Sexual minorities (N = 204) | None-sexual minorities (N = 204) | ||||||
Sex | 75.39 | < 0.001 | 0.057 | 0.811 | |||||
Men | 1499(51.8%) | 46(22.5%) | 1453(54.1%) | 46(22.5%) | 44(21.6%) | ||||
Women | 1393(48.2%) | 158(77.5%) | 1235(45.9%) | 158(77.5%) | 160(78.4%) | ||||
Grade | 3.60 | 0.166 | 0.149 | 0.928 | |||||
The first year | 2224(76.9%) | 146(71,6%) | 2078(77.3%) | 146(71,6%) | 146(71.6%) | ||||
The second year | 264(9.1%) | 22(10.8%) | 242(9.0%) | 22(10.8%) | 20(9.8%) | ||||
The Junior year or higher | 404(14.0%) | 36(17.6%) | 368(13.7%) | 36(17.6%) | 38(18.6%) | ||||
Only children | 6.17 | 0.013 | 0.260 | 0.610 | |||||
Yes | 909(31.4%) | 80(39.2%) | 829(30.8%) | 80(39.2%) | 75(36.8%) | ||||
No | 1983(68.6%) | 124(60.8%) | 1859(69.2%) | 124(60.8%) | 129(63.2) | ||||
Academic field | 10.46 | 0.033 | 0.116 | 0.998 | |||||
Science | 344(11.9%) | 18(8.8%) | 326(12.1%) | 18(8.8%) | 19(9.3%) | ||||
Engineering | 676(23.4%) | 38(18.6%) | 638(23.7%) | 38(18.6%) | 40(19.6%) | ||||
Medicine | 790(27.3%) | 72(35.3%) | 718(26.7%) | 72(35.3%) | 70(34.3%) | ||||
Agriculture | 398(13.8%) | 23(11.3%) | 375(14.0%) | 23(11.3%) | 23(11.3%) | ||||
Others | 684(23.7%) | 53(26.0%) | 631(23.5%) | 53(26.0%) | 52(25.5%) | ||||
Mean ± SD | Mean ± SD | Mean ± SD | T | P | Mean ± SD | Mean ± SD | T | P | |
Age | 18.55 ± 1.08 | 18.48 ± 1.13 | 18.56 ± 1.07 | 1.047 | 0.306 | 18.48 ± 1.13 | 18.49 ± 1.15 | 0.008 | 0.931 |
Subjective socio-economic status | 4.48 ± 1.62 | 4.37 ± 1.69 | 4.49 ± 1.61 | 1.032 | 0.310 | 4.37 ± 1.69 | 4.39 ± 1.64 | 0.022 | 0.882 |