Table 1.
Characteristics of the subjects in each age group
| Variable | All (n = 524) | 23–29 years (n = 53) | 30–39 years (n = 280) | 40–49 years (n = 191) |
|---|---|---|---|---|
| Age (years) | 37.3 ± 5.4 | 26.5 ± 2.1 | 35.8 ± 2.7 | 42.6 ± 2.3 |
| Height (cm) | 169.9 ± 5.8 | 170.1 ± 6.1 | 170.2 ± 5.9 | 169.4 ± 5.7 |
| Weight (kg) | 67.7 ± 9.8 | 65.3 ± 12.7 | 67.4 ± 10.0 | 68.6 ± 8.5 |
| BMI (kg/m2) | 23.4 ± 3.0 | 22.5 ± 3.7 | 23.2 ± 3.1 | 23.9 ± 2.6* |
| BMD (g/m2) | 0.56 ± 0.06 | 0.55 ± 0.06 | 0.56 ± 0.06 | 0.56 ± 0.06 |
| DPD (nmol/mmol CRE) | 3.7 ± 1.2 | 4.0 ± 1.0 | 3.6 ± 1.2 | 3.7 ± 1.2 |
| BAP (U/L) | 25.5 ± 8.0 | 26.2 ± 6.4 | 25.2 ± 7.1 | 25.8 ± 9.5 |
Values are mean ± SD
BMI body mass index, BMD bone mineral density, DPD deoxypyridinoline, BAP bone alkaline phosphatase
Data were analyzed by analysis of variance (ANOVA) and Tukey’s test
* P < 0.05 compared with 23–29 years