Table 1—

Prevalence of the metabolic syndrome and its components by sex and menopausal-specific quartiles of serum ferritin

Premenopausal women (n = 1,645)Quartile of serum ferritin
≤20 μg/l21–36 μg/l37–60 μg/l>60 μg/lP (trend)
Median ferritin in quartile11264789
Metabolic syndrome6.4 ± 1.68.1 ± 2.112.2 ± 2.314.9 ± 2.50.002
Blood pressure ≥130/85 mmHg*3.6 ± 1.03.1 ± 0.93.4 ± 0.94.5 ± 1.40.53
Plasma glucose ≥6.105 mmol/l5.3 ± 1.81.9 ± 0.82.9 ± 0.85.5 ± 1.30.52
HDL cholesterol <1.295 mmol/l34.4 ± 3.840.4 ± 3.440.7 ± 4.141.8 ± 3.40.18
Serum triglycerides ≥1.695 mmol/l13.3 ± 3.610.2 ± 2.517.6 ± 2.820.1 ± 2.40.01
Waist circumference ≥88 cm27.0 ± 3.331.9 ± 3.537.1 ± 3.542.3 ± 4.90.02
Postmenopausal women (n = 1,424)Quartile of serum ferritin
≤54 μg/l55–95 μg/l96–168 μg/l>168 μg/lP (trend)
Median ferritin in quartile3573125212
Metabolic syndrome28.2 ± 2.921.8 ± 3.434.3 ± 2.247.5 ± 3.9<0.001
Blood pressure ≥130/85 mmHg*20.2 ± 2.615.8 ± 2.721.8 ± 3.126.1 ± 3.30.04
Plasma glucose ≥6.105 mmol/l12.8 ± 1.814.9 ± 2.821.2 ± 2.633.7 ± 2.8<0.001
HDL cholesterol <1.295 mmol/l39.8 ± 4.533.8 ± 3.941.5 ± 3.644.3 ± 3.60.26
Serum triglycerides ≥1.695 mmol/l30.8 ± 3.530.2 ± 3.143.7 ± 2.653.3 ± 3.8<0.001
Waist circumference ≥88 cm56.7 ± 3.058.1 ± 3.568.5 ± 3.470.9 ± 4.20.009
Men (n = 2,880)Quartile of serum ferritin
≤86 μg/l87–145 μg/l146–231 μg/l>231 μg/lP (trend)
Median ferritin in quartile62113182318
Metabolic syndrome13.8 ± 2.116.8 ± 2.118.8 ± 2.727.3 ± 3.0<0.001
Blood pressure ≥130/85 mmHg*11.6 ± 2.313.6 ± 3.116.9 ± 2.718.4 ± 2.30.05
Plasma glucose ≥6.105 mmol/l11.9 ± 1.611.5 ± 1.614.6 ± 1.726.6 ± 2.7<0.001
HDL cholesterol <1.036 mmol/l35.5 ± 3.932.1 ± 3.634.8 ± 2.841.9 ± 3.90.13
Serum triglycerides ≥ 1.695 mmol/l24.0 ± 3.133.8 ± 3.534.5 ± 3.650.7 ± 4.3<0.001
Waist circumference ≥ 102 cm24.0 ± 2.726.3 ± 3.629.6 ± 2.437.7 ± 3.10.02
  • Data are prevalence ± SE.

  • *

    * Includes individuals who reported current use of antihypertensive medications regardless of blood pressure values.

  • Includes individuals who reported current use of oral hypoglycemic medications or insulin regardless of fasting glucose values.