Table 1 Characteristics of the study sample.(N = 471)

Age(x ± s)

25.56 ± 4.54

BMI(x ± s)

25.25 ± 4.79

WC(x ± s)

82.67 ± 12.66

Nationality

Han-nationality

399(84.7%)

Ethnic minority

72(15.3%)

Registered residence

Urban

247(52.4%)

Rural

224(47.6%)

Marital status

Single

231(48.8%)

Married

230(49.0%)

Widowed/divorced

10(2.1%)

Education

Primary School or Below

2(0.4%)

Junior and senior high school

254(53.9%)

College or above

215(45.6%)

Occupation

Employed

130(27.6%)

Unemployed

57(12.1%)

Student

90(19.1%)

Others

194(41.2%)

Per capita monthly household income(RMB)

< 5000

270(57.3%)

5000–10,000

152(32.3%)

≥ 10,000

94(10.4%)

Pregnancy needs

yes

243(51.6%)

no

228(48.4%)