Group

Male/Female

Age (years old)

BMI (Kg/m²)

Years of education (years)

Household income

(CNY10,000)

Study group (n = 60)

50/10

57.99 ± 10.54

21.69 ± 1.89

211.03 ± 2.41

27.46 ± 2.62

Control group (n = 60)

48/12

59.34 ± 9.62

22.02 ± 2.05

210.86 ± 2.16

28.01 ± 2.93

t/χ² Value

0.075

0.631

0.541

0.258

0.445

P value

0.906

0.676

0.739

0.843

0.713