Variable

N (%) or M (SD)

Gender (1 = Male, 2 = Female)

1 = 255 (50.3%), 2 = 252 (49.7%)

Age (years)

M = 34.41, SD = 6.61

Height (cm)

M = 169.02, SD = 4.33

Weight (kg)

M = 63.42, SD = 4.02

Ethnicity (1 = Han, 2 = Minority)

1 = 306 (60.4%), 2 = 201 (39.6%)

Educational Attainment

1 = Primary school or below (n = 13, 2.6%) 2 = Junior middle school (n = 38, 7.5%) 3 = Vocational high school (n = 118, 23.3%) 4 = General high school (n = 87, 17.2%) 5 = Junior college (n = 124, 24.5%) 6 = Undergraduate (Bachelor’s degree) (n = 104, 20.5%) 7 = Master’s degree (n = 4, 0.8%) 8 = Doctorate or above (n = 19, 3.7%)

Marital Status (1 = Married, 2 = Unmarried, 3 = Other)

1 = 400 (78.9%), 2 = 70 (13.8%), 3 = 37 (7.3%)

Urban Residency (1 = Urban, 2 = Rural)

1 = 315 (62.1%), 2 = 192 (37.9%)

Job Status (1 = Unemployed, 2 = Employed, 3 = Other)

1 = 75 (14.8%), 2 = 380 (75.0%), 3 = 52 (10.3%)

Only Child (1 = Yes, 2 = No)

1 = 309 (60.9%), 2 = 198 (39.1%)

Parental Marriage Stability (1 = Stable, 2 = Other)

1 = 507 (100.0%)

Occupation Type

1 = Students (n = 62, 12.2%)

2 = Temporary workers, unemployed/job-seeking individuals, and low-skill agricultural laborers (n = 170, 33.5%)

3 = Manual laborers, self-employed individuals, and skilled workers (n = 176, 34.7%)

4 = General administrative and technical personnel (n = 67, 13.2%) 5 = Mid-level managers and professionals (n = 20, 3.9%)

6 = Senior managers, senior professionals, or institutional leaders (n = 12, 2.4%)

Parenthood (1 = Has children, 2 = No children)

1 = 339 (66.9%), 2 = 168 (33.1%)

Monthly Income

1 = ¥3000 or below (n = 128, 25.2%) 2 = ¥3000 - ¥6000 (n = 127, 25.0%) 3 = ¥6000 - ¥9000 (n = 100, 19.7%) 4 = ¥9000 - ¥12,000 (n = 54, 10.7%) 5 = ¥12,000 - ¥15,000 (n = 53, 10.5%) 6 = ¥15,000 or above (n = 45, 8.9%)