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Table 1 Demographic characteristics of the study population (n=10054)

From: Socioeconomic status and metabolic syndrome in the general population of China: a cross-sectional study

Variable Men (n=3 687) Women (n=6 367) Pvalue
Age (years) 52.7±13.57 52.46±13.03 0.0053
BMI (kg/m2) 25.0±3.66 25.5±4.08 <0.0001
Waist circumference (cm) 89.17±10.36 85.5±10.80 0.0046
SBP (mmHg) 129.11±18.47 126.03±19.68 <0.0001
DBP (mmHg) 81.88±10.72 78.97±10.27 0.0030
FBG (mmol/L) 5.08±1.69 5.11±1.70 0.7639
TG (mmol/L) 1.63±1.73 1.46±1.24 <0.0001
HDL (mmol/L) 1.26±0.38 1.36±0.29 <0.0001
Education level    <0.0001
 <7 years 810 (21.97) 2114 (33.20)  
 7~12 years 2389 (64.80) 3635 (57.09)  
 >12 years 488 (13.24) 618 (9.71)  
Personal monthly income level    <0.0001
 Lower 3062 (83.05) 5841 (91.74)  
 Middle 511 (13.86) 474 (7.44)  
 Higher 114 (3.09) 52 (0.82)  
Household monthly income level    0.8124
 Lower 3217 (87.25) 5535 (86.93)  
 Middle 427 (11.58) 762 (11.97)  
 Higher 43 (1.17) 70 (1.10)  
Marital status    <0.0001
 Married 3384 (91.78) 5639 (88.57)  
 Else 303 (8.22) 728 (11.43)  
Drinking    <0.0001
 Never 1824 (49.47) 6061 (95.21)  
 Previous drinking 561 (15.22) 181 (2.84)  
 Current drinking 1302 (35.31) 124 (1.95)  
Smoking    <0.0001
 Non-smoker 987 (26.77) 5780 (90.78)  
 Current smoker 2191 (59.43) 483 (7.59)  
 Ex-smoker 509 (13.81) 104 (1.63)  
Physical activity (hours/day)    0.0007
 ≤1 2482 (67.32) 4056 (63.70)  
 2~3 1083 (29.37) 2102 (33.01)  
 ≥4 122 (3.31) 209 (3.28)  
Community type    <0.0001
 Urban 663 (17.98) 1396 (21.93)  
 Urban–rural mixed 1039 (28.18) 1999 (31.40)  
 Rural 1985 (53.84) 2972 (46.68)  
Metabolic syndrome    <0.0001
 Yes 518 (14.05) 1818 (28.55)  
 No 3169 (85.95) 4549 (71.45)  
  1. BMI body mass index, SBP systolic blood pressure, DBP diastolic blood pressure, FBG fasting blood glucose, TG triglycerides, HDL high density lipoprotein.