Table 2.
General Characteristics of Subjects in Twin and SNP Models
| Characteristics | Complete Twin Pairs in Twin Model | Unrelated Individuals in SNP Model | ||
|---|---|---|---|---|
| N | Value | N | Value | |
| Men, % | 3653 | 47.20 | 2755 | 47.67 |
| Age, y | 7740 | 65.03±7.75 | 5779 | 64.91±8.33 |
| Triglycerides, mmol/L | 7739 | 1.20 (0.86–1.60) | 5778 | 1.20 (0.85–1.60) |
| Total cholesterol, mmol/L | 7740 | 5.78±1.13 | 5779 | 5.76±1.11 |
| Low‐density lipoprotein, mmol/L | 7639 | 3.77±0.99 | 5704 | 3.75±0.98 |
| Apolipoprotein B, g/L | 7738 | 1.09±0.25 | 5776 | 1.08±0.25 |
| Non‐high‐density lipoprotein, mmol/L | 7740 | 4.38±1.07 | 5779 | 4.35±1.06 |
| High‐density lipoprotein, mmol/L | 7740 | 1.41±0.42 | 5779 | 1.41±0.42 |
| Apolipoprotein A1, g/L | 7738 | 1.64±0.30 | 5776 | 1.64±0.30 |
| Hemoglobin, g/dL | 7726 | 14.26±1.19 | 5769 | 14.26±1.21 |
| Hemoglobin A1c, % | 7727 | 4.82±0.66 | 5770 | 4.82±0.68 |
| Glucose, mmol/L | 7736 | 5.59±1.20 | 5775 | 5.59±1.19 |
| Creatinine, μmol/L | 7534 | 75 (66–86) | 5634 | 76 (66–87) |
| Cystatin C, mg/L | 7534 | 0.97 (0.86–1.11) | 5634 | 0.97 (0.86–1.12) |
| eGFR, mL/min per 1.73 m2 | 7534 | 83.62±21.50 | 5633 | 83.09±22.26 |
| C‐reactive protein, mg/L | 7738 | 1.70 (0.74–3.50) | 5777 | 1.70 (0.71–3.50) |
| Height, m | 7685 | 1.69±0.10 | 5701 | 1.69±0.10 |
| Weight, kg | 7684 | 74.74±13.67 | 5699 | 75.06±13.69 |
| Body mass index, kg/m2 | 7679 | 26.29±7.48 | 5695 | 26.26±6.72 |
| Waist circumference, cm | 7671 | 91.70±12.12 | 5693 | 91.89±12.13 |
| Hip circumference, cm | 7655 | 103.24±8.83 | 5680 | 103.41±8.77 |
| Waist/hip ratio | 7652 | 0.89±0.15 | 5680 | 0.89±0.10 |
| Systolic blood pressure, mm Hg | 7334 | 139.11±19.79 | 5420 | 139.42±20.01 |
| Diastolic blood pressure, mm Hg | 7333 | 82.14±10.68 | 5420 | 82.13±10.67 |
| Mean arterial pressure, mm Hg | 7333 | 101.13±12.30 | 5420 | 101.23±12.31 |
| Pulse pressure, mm Hg | 7333 | 56.96±15.78 | 5420 | 57.28±16.13 |
Values are in number (percentage) for sex, mean±SD for the normal distribution, or median (25th–75th percentile) for the skewed distribution. eGFR indicates estimated glomerular filtration rate; SNP, single‐nucleotide polymorphism.