Table 2.
Components of metabolic syndrome in premenopausal women by age at menarche and age at the time of survey
| Characteristic | Age at menarche (y) |
P-value | ||
|---|---|---|---|---|
| <12 | 12–15 | ≥16 | ||
| 20–39 y | ||||
| Body mass index (kg/m2) | 23.00±0.27* | 21.86±0.12† | 21.28±0.36† | <0.001 |
| Waist circumference (cm) | 75.98±0.62* | 73.08±0.31† | 72.48±1.01† | <0.001 |
| HDL cholesterol (mg/dL) | 59.73±0.95† | 58.49±0.36† | 59.40±1.37† | 0.451 |
| Fasting triglycerides (mg/dL) | 90.40±6.45† | 85.69±1.75† | 101.17±15.07† | 0.396 |
| Fasting glucose (mg/dL) | 90.08±0.54† | 90.63±0.48† | 92.30±2.63† | 0.815 |
| Systolic pressure (mm Hg) | 104.99±0.73† | 104.47±0.32† | 105.28±1.02† | 0.875 |
| Diastolic pressure (mm Hg) | 69.67±0.75† | 69.46±0.29† | 68.38±0.82† | 0.401 |
| 40–55 y | ||||
| Body mass index (kg/m2) | 24.24±0.55† | 23.42±0.12† | 23.13±0.18† | 0.274 |
| Waist circumference (cm) | 79.43±1.59† | 77.09±0.33† | 76.15±0.50† | 0.204 |
| HDL cholesterol (mg/dL) | 56.81±2.56† | 56.52±0.40† | 56.12±0.83† | 1.000 |
| Fasting triglycerides (mg/dL) | 101.34±11.90† | 112.25±2.39† | 117.46±5.71† | 0.807 |
| Fasting glucose (mg/dL) | 97.31±3.65† | 96.35±0.54† | 95.74±1.05† | 0.603 |
| Systolic pressure (mm Hg) | 114.11±2.30† | 111.65±0.48† | 115.45±1.11* | 0.04 |
| Diastolic pressure (mm Hg) | 76.20±1.81† | 73.92±0.34† | 75.78±0.76† | 0.05 |
Values are presented as mean±standard error. Differences between early menarche (or late menarche) and reference group were compared using analysis of variance after adjusting for current age of participants.
HDL, high-density lipoprotein.
*,†
The same symbols indicate non-significant differences between groups based on the Bonferroni test for analysis of variance.