Table 2.
Characteristics and BMD measurements of the 1,080 subjects and the constituent 533 postmenopausal women
| Whole study population | Postmenopausal women | |||||
|---|---|---|---|---|---|---|
| Cases | Controls | p value (t test) | Cases | Controls | p value (t test) | |
| Skeletal site: lumbar spine | ||||||
| Number | 457 | 254 | – | 314 | 107 | – |
| Age (year) | 51.71 ± 13.78 | 49.56 ± 14.35 | 0.05 | 59.92 ± 5.90 | 63.55 ± 8.16 | <0.01* |
| Height (m) | 1.53 ± 0.06 | 1.576 ± 0.06 | <0.01* | 1.52 ± 0.057 | 1.55 ± 0.05 | <0.01* |
| Weight (kg) | 49.98 ± 7.22 | 60.34 ± 9.76 | <0.01* | 51.03 ± 7.43 | 62.45 ± 9.79 | <0.01* |
| BMD (g/cm2) | 0.71 ± 0.09 | 1.12 ± 0.10 | <0.01 | 0.66 ± 0.07 | 1.06 ± 0.10 | <0.01 |
| BMD Z-score | −1.73 ± 0.40 | 1.53 ± 0.63 | <0.01 | −1.8 ± 0.43 | 1.68 ± 0.71 | <0.01 |
| Skeletal site: femoral neck | ||||||
| Number | 399 | 283 | – | 186 | 98 | – |
| Age (year) | 45.89 ± 15.27 | 45.56 ± 14.32 | 0.77 | 60.60 ± 6.09 | 61.05 ± 8.26 | 0.63 |
| Height (m) | 1.54 ± 0.06 | 1.46 ± 1.087 | <0.01* | 1.51 ± 0.06 | 1.54 ± 0.06 | <0.01* |
| Weight (kg) | 48.44 ± 6.40 | 61.11 ± 12.31 | <0.01* | 49.64 ± 7.07 | 63.41 ± 9.17 | <0.01* |
| BMD (g/cm2) | 0.56 ± 0.07 | 0.90 ± 0.10 | <0.01 | 0.51 ± 0.05 | 0.83 ± 0.06 | <0.01 |
| BMD Z-score | −1.68 ± 0.34 | 1.58 ± 0.53 | <0.01 | −1.7 ± 0.36 | 1.48 ± 0.38 | <0.01 |
| Skeletal site: total hip | ||||||
| Number | 356 | 260 | – | 194 | 86 | – |
| Age (year) | 48.44 ± 14.70 | 45.51 ± 13.76 | 0.01* | 60.52 ± 6.02 | 60.97 ± 7.59 | 0.63 |
| Height (m) | 1.54 ± 0.06 | 1.54 ± 0.66 | 0.99 | 1.52 ± 0.06 | 1.55 ± 0.057 | <0.01* |
| Weight (kg) | 48.62 ± 6.37 | 62.42 ± 10.88 | <0.01* | 49.57 ± 6.78 | 64.38 ± 9.00 | <0.01* |
| BMD (g/cm2) | 0.63 ± 0.07 | 0.99 ± 0.07 | <0.01 | 0.59 ± 0.06 | 0.93 ± 0.06 | <0.01 |
| BMD Z-score | −1.83 ± 0.44 | 1.67 ± 0.54 | <0.01 | −1.89 ± 0.49 | 1.60 ± 0.45 | <0.01 |
*p < 0.05, the parameters with * are adjusted as covariates in subsequent analysis