| 
      
      *defined as the clustering of three or more of the following components: 1) high
    body mass index (BMI): BMI ≥ 25 kg/m2, 2) high blood pressure (BP): systolic BP
    ≥ 130 mmHg and/or diastolic BP ≥ 85 mmHg and/or antihypertensive medication,
    3) high triglycerides: triglycerides ≥ 1.7 mmol/L, 4) low HDL cholesterol: HDL
    cholesterol < 1.0 mmol/L in men and < 1.3 mmol/L in women, and 5) high fasting
    plasma glucose (FPG): FPG ≥ 5.6 mmol/L
        |  | diabetes | non-diabetes | p |  
        | metabolic syndrome | 32.6 | 7.0 | <0.0001 |  
        | high fasting plasma glucose | 51.2 | 9.3 | <0.0001 |  
        | high body mass index | 39.5 | 18.5 | 0.0005 |  
        | high blood pressure | 62.8 | 53.3 | 0.2 |  
        | high triglycerides | 32.6 | 12.7 | 0.0001 |  
        | low HDL cholesterol | 18.6 | 7.8 | 0.01 |  |