Table 1.
Basic characteristics of the study population.
| Normal E2 & normal BMD (NN group) | Low E2 & normal BMD (LN group) | Low E2 & low BMD (LL group) | p value (NN vs LN) | p value (NN vs LL) | p value (LN vs LL) | |
|---|---|---|---|---|---|---|
| Age (years) | 41.7 ± 1.5 | 60.9 ± 9.9 | 71.3 ± 8.9 | *** | *** | *** |
| Height (cm) | 158.3 ± 3.6 | 154.7 ± 5.9 | 150.7 ± 8.9 | ** | *** | ** |
| Body weight (kg) | 51.1 ± 4.6 | 53.0 ± 9.4 | 46.4 ± 7.7 | NS | ** | *** |
| BMI (kg/m2) | 20.4 ± 1.7 | 22.1 ± 3.3 | 20.5 ± 3.6 | ** | NS | * |
| Ca (mg/dl) | 9.2 ± 0.3 | 9.4 ± 0.3 | 9.3 ± 0.3 | ** | NS | * |
| IP (mg/dL) | 3.7 ± 0.4 | 3.7 ± 0.4 | 3.8 ± 0.4 | NS | NS | NS |
| 25(OH)D (ng/ml) | 21.5 ± 6.6 | 22.5 ± 6.0 | 19.6 ± 8.3 | NS | NS | * |
| Intact PTH (pg/ml) | 49.8 ± 12.7 | 51.8 ± 16.5 | 61.9 ± 43.7 | NS | NS | NS |
| TRACP5b (mU/dL) | 186.6 ± 66.5 | 385.3 ± 171.3 | 506.8 ± 184.6 | *** | *** | ** |
| BMD: t score (SD) | 0.8 ± 0.8 | −0.2 ± 0.9 | −2.7 ± 0.7 | *** | *** | *** |
| E2 (pg/ml) | 174.2 ± 147.9 | 10.0 ± 0.0 | 10.1 ± 0.4 | *** | *** | * |