Table 1.
Demographic characteristics of enrolled participants.
| Characteristic | Model A (%) | Model B (%) | Model C (%) | Total (%) | P |
|---|---|---|---|---|---|
| (N = 532) | (N = 586) | (N = 522) | (N = 1640) | ||
| Age | 0.066 | ||||
| 18–25 | 289 (54.3) | 339 (57.8) | 256 (49.0) | 884 (53.9) | |
| 25–35 | 142 (26.7) | 143 (24.4) | 158 (30.3) | 443 (27.0) | |
| Over35 | 101 (19.0) | 104 (17.7) | 108 (20.7) | 313 (19.1) | |
| Ethnicity | 0.008 | ||||
| Han population | 470 (88.3) | 547 (93.3) | 482 (92.3) | 1499 (91.4) | |
| Other population | 62 (11.7) | 39 (6.7) | 40 (7.7) | 141 (8.6) | |
| Provinces | 0.120 | ||||
| Guangxi | 200 (37.6) | 208 (36.1) | 194 (40.2) | 602 (36.7) | |
| Chongqing | 195 (36.7) | 180 (31.3) | 181 (34.7) | 556 (33.9) | |
| Xinjiang | 137 (25.7) | 188 (32.6) | 147 (28.2) | 472 (28.8) | |
| Religion | 0.003 | ||||
| Buddhism | 52 (9.8) | 32 (5.5) | 21 (4.0) | 105 (6.4) | |
| Other religious belief | 18 (3.4) | 12 (2.0) | 9 (1.7) | 39 (2.4) | |
| No religious belief | 462 (86.8) | 542 (92.5) | 429 (94.3) | 1496 (91.2) | |
| Education level | 0.112 | ||||
| Junior school or below | 89 (16.7) | 92 (15.7) | 106 (20.3) | 287 (17.5) | |
| High school or above | 443 (83.3) | 494 (84.3) | 416 (79.7) | 1353 (82.5) | |
| Marital status | 0.265 | ||||
| Never married | 313 (58.8) | 337 (57.5) | 301 (57.7) | 951 (58.0) | |
| Married or cohabitation without marriage | 215 (40.4) | 240 (41.0) | 208 (39.8) | 663 (40.4) | |
| Divorced/separated/widowed | 4 (0.8) | 9 (1.5) | 13 (2.5) | 26 (1.6) | |
| Employment status | 0.253 | ||||
| Employed | 490 (92.1) | 551 (94.0) | 493 (94.4) | 1534 (93.5) | |
| Unemployed | 42 (7.9) | 35 (6.0) | 29 (5.6) | 106 (6.5) |
Note: Compared baseline characteristics among Model A, B and C used the chi-squared test.