Table 1 Characteristics of respondents (N = 54,580)
Characteristics | Male (n = 18,844) | Female (n = 35,736) | Total (N = 54,580) | P-value |
|---|---|---|---|---|
Age (years), mean/SD | 19.94/1.95 | 19.86/1.75 | 19.88/1.82 |  < 0.0001 |
Sexual orientation, % (n) | ||||
 Heterosexual | 82.81 (15,605) | 74.90 (26,767) | 77.63 (42,372) |  < 0.0001 |
 Homosexual | 5.35 (1,008) | 1.46 (520) | 2.80 (1,528) |  |
 Bisexual | 5.03 (948) | 11.14 (3,980) | 9.03 (4,928) |  |
 Other | 2.17 (408) | 3.48 (1,243) | 3.02 (1,651) |  |
 Uncertain | 4.64 (875) | 9.03 (3,226) | 7.51 (4,101) |  |
Ethnicity | ||||
 Han | 91.71 (17,282) | 90.07 (32,186) | 90.63 (49,468) |  < 0.0001 |
 Ethnic minorities | 8.29 (1,562) | 9.93 (3,550) | 9.37 (5,112) |  |
Educational level | ||||
 College | 40.25 (7,585) | 32.65 (11,668) | 35.27 (19,253) |  < 0.0001 |
 University | 55.70 (10,497) | 64.22 (22,951) | 61.28 (33,448) |  |
 Graduate | 4.04 (762) | 3.13 (1,117) | 3.44 (1,879) |  |
Father’s highest educational level | ||||
 Primary school and below | 18.78 (3,538) | 19.50 (6,968) | 19.25 (10,506) | 0.042 |
 Middle school | 59.31 (11,177) | 59.27 (21,181) | 59.29 (32,358) |  |
 College degree or above | 19.93 (3,755) | 19.48 (6,960) | 19.63 (10,715) |  |
 Uncertain | 1.98 (374) | 1.75 (627) | 1.83 (1,001) |  |
Mother’s highest educational level | ||||
 Primary school or below | 29.92 (5,638) | 30.59 (10,933) | 30.36 (16,571) |  < 0.0001 |
 Middle school | 52.28 (9,852) | 52.24 (18,669) | 52.26 (28,521) |  |
 College degree or above | 15.56 (2,933) | 15.61 (5,579) | 15.6 (8,512) |  |
 Uncertain | 2.23 (421) | 1.55 (555) | 1.79 (976) |  |
Hometown region | ||||
 Urban | 45.08 (8,494) | 43.69 (15,614) | 44.17 (24,108) |  < 0.0001 |
 Suburban | 32.68 (6,159) | 34.37 (12,281) | 33.79 (18,440) |  |
 Rural | 22.24 (4,191) | 21.94 (7,841) | 22.04 (12,032) |  |
Only-child status | 38.51 (6,960) | 28.08 (9,791) | 31.64 (16,751) |  < 0.0001 |
Family economic status | ||||
 Inferior | 26.39 (4,973) | 24.85 (8,882) | 25.38 (13,855) |  < 0.0001 |
 Moderate | 61.63 (11,614) | 64.66 (23,107) | 63.61 (34,721) |  |
 Superior | 11.98 (2,257) | 10.49 (3,747) | 11.00 (6,004) |  |
Left-behind experience (Yes) | 30.73 (5,790) | 31.59 (11,290) | 31.29 (17,080) | 0.038 |
History of migration (Yes) | 21.33 (4,019) | 19.24 (6,875) | 19.96 (10,894) |  < 0.0001 |
Ever had sexual intercourse (Yes) | 28.19 (5,312) | 19.50 (6,968) | 22.5 (12,280) |  < 0.0001 |
Had symptoms related to SRH in the past 12 months (Yes) | 12.79 (2,410) | 23.44 (8,376) | 19.77 (10,786) |  < 0.0001 |