Table 2.
Association of age at menarche with metabolic traits (data are expressed as beta coefficients, with 95% confidence intervals, for linear regression adjusted for age, area, education, income, and CRP level) in KARE.
| Metabolic traits | Age at menarche (years) | P a | |||||
|---|---|---|---|---|---|---|---|
| ≤12 | 13 | 14 | 15 | 16 | ≥17 | ||
| Beta coefficient (95% CI) | |||||||
| SBP (mmHg) | 2.22 (−1.65–6.10) | −1.51 (−3.82–0.80) | 1.17 (−0.64–2.99) | 0.54 (−1.11–2.18) | 0 (−1.66–1.66) | −0.004 (−1.53–1.52) | 0.27 |
| DBP (mmHg) | 1.26 (−0.98–3.50) | −0.34 (−1.71–1.03) | 0.44 (−0.63–1.51) | 0.42 (−0.56–1.39) | 0 (−0.96–0.96) | 0.58 (−0.32–1.49) | 0.44 |
| FI (mg/dl) | −0.02 (−0.92–0.88) | 0.07 (−0.51–0.65) | −0.002 (−0.47–0.46) | −0.24 (−0.64–0.17) | 0 (−0.40–0.40) | −0.40 (−0.77–0.03) | 0.91 |
| FG (μU/ml) | 2.19 (−1.13–5.51) | −0.50 (−2.42–1.42) | 0.71 (−0.94–2.37) | 0.63 (−0.94–2.19) | 0 (−1.44–1.44) | 0.97 (−0.58–2.5) | 0.12 |
| WC (cm) | 3.54 ∗ (1.53–5.55) | 0.79 (−0.42–2.00) | 0.55 (−0.40–1.49) | 0.26 (−0.63–1.15) | 0 (−0.86–0.86) | −0.52 (−1.33–0.29) | <0.01 |
| TG (mg/dl) | 37.83∗ (16.00–59.66) | 4.67 (−6.93–16.26) | 3.15 (−6.60–12.90) | 1.80 (−6.29–9.90) | 0 (−8.24–8.24) | −0.004 (−7.81–7.80) | 0.02 |
| HDL (mg/dl) | −0.07 (−2.48–2.33) | 0.52 (−0.94–1.99) | 0.81 (−0.38–2.00) | 0.11 (−0.95–1.17) | 0 (−1.03–1.03) | 0.66 (−0.31–1.64) | 0.71 |
SBP: systolic blood pressure; DBP: diastolic blood pressure; FI: fasting insulin; FG: fasting glucose; WC: waist circumference; TG: triglyceride; HDL: high-density lipoprotein. aAge at menarche as a dummy variable (≤12 years: 0, >12 years: 1), ∗ P < 0.01.