Table 1.
Descriptive statistics.
| Variable | Total (n = 216) | MZ (n = 124) | DZ (n = 92) |
|---|---|---|---|
| Sex | 72:28 | 66:34 | 80:20 |
| Age | 54.2 ± 14.3 | 52.34 * ± 14.48 | 56.76 * ± 13.72 |
| BMI | 25.63 ± 4.72 | 25.2 ± 4.54 | 26.2 ± 4.92 |
| LUMBAR BMD | 1 ± 0.15 | 1 ± 0.15 | 0.99 ± 0.16 |
| LUMBAR Z SCORE | 0.35 ± 1.25 | 0.28 ± 1.23 | 0.44 ± 1.26 |
| LUMBAR T SCORE | −0.73 ± 1.38 | −0.68 ± 1.37 | −0.8 ± 1.41 |
| FEMORAL NECK BMD | 0.79 ± 0.15 | 0.8 ± 0.16 | 0.77 ± 0.13 |
| FEMORAL NECK Z SCORE | 0.23 ± 1 | 0.22 ± 1.06 | 0.25 ± 0.92 |
| FEMORAL NECK T SCORE | −0.94 ± 1.08 | −0.89 ± 1.16 | −1 ± 0.99 |
| TOTAL HIP BMD | 0.92 ± 0.15 | 0.94 ± 0.15 | 0.9 ± 0.14 |
| TOTAL HIP Z SCORE | 0.29 ± 1.02 | 0.31 ± 0.98 | 0.27 ± 1.07 |
| TOTAL HIP T SCORE | −0.44 ± 1.12 | −0.41 ± 1.12 | −0.49 ± 1.13 |
| RADIUS BMD | 0.65 ± 0.09 | 0.66 * ± 0.09 | 0.63 * ± 0.09 |
| RADIUS Z SCORE | −0.39 ± 1.01 | −0.4 ± 1.01 | −0.38 ± 1.02 |
| RADIUS T SCORE | −1.53 ± 1.18 | −1.41 ± 1.14 | −1.68 ± 1.22 |
| CALCANEUS eBMD | 0.52 ± 0.13 | 0.53 ± 0.13 | 0.51 ± 0.12 |
| CALCANEUS eBMD T SCORE | −0.6 ± 1.14 | −0.54 ± 1.17 | −0.68 ± 1.11 |
T-test: *: p < 0.05, n refers to the number of individuals included in an examination. Format is mean ± SD, and percent of female: male for sex. MZ: monozygotic, DZ: dizygotic twins. Variables determined by ultrasound technique.