Table 2.
Age-Adjusted Mean BMD, BMC, or BMAD (95% CI) by Prevalent Vertebral Fracture Status in White Women and Black Women
|
White
|
Black
|
|||
| No fracture (n = 6360) | Fracture (n = 1500) | No fracture (n = 422) | Fracture (n = 50) | |
| Total hip | ||||
| BMD (g/cm2) | 0.77 (0.768, 0.774) | 0.70 (0.698, 0.711)* | 0.83 (0.82, 0.85) | 0.75 (0.71, 0.79)* |
| BMC (g) | 29.5 (29.4, 29.7) | 27.3 (27.0, 27.6)* | 29.0 (28.4, 29.5) | 26.3 (24.7, 27.9)† |
| Femoral neck | ||||
| BMD (g/cm2) | 0.66 (0.656, 0.661) | 0.61 (0.60, 0.61)* | 0.75 (0.74, 0.76) | 0.69 (0.65, 0.73)† |
| BMC (g) | 3.2 (3.19, 3.22) | 3.0 (2.9, 3.0)* | 3.9 (3.8, 3.9) | 3.6 (3.4, 3.8)‡ |
| BMAD (g/cm3) | 0.14 (0.138, 0.139) | 0.13 (0.126, 0.129)* | 0.15 (0.14, 0.15) | 0.14 (0.13, 0.15)‡ |
| Femoral neck T-score§ | ||||
| T-score (mean) | −1.71 (−1.74, −1.69) | −2.16 (−2.21, −2.11)* | −1.41 (−1.51, −1.32) | −1.81 (−2.09, −1.54)† |
| T-score > −1 | 20.6% | 9.3% | 29.6% | 18.0% |
| T-score < −1 and > −2.5 | 58.6% | 48.9% | 56.4% | 52.0% |
| T-score ≤ −2.5 | 20.8% | 41.7%* | 14.0% | 30.0%‡ |
| Lumbar spine BMD¶ | ||||
| BMD (g/cm2) | 0.87 (0.866, 0.875) | 0.80 (0.789, 0.807)* | 0.96 (0.939, 0.981) | 0.86 (0.798, 0.923)† |
| BMC (g) | 49.2 (48.86, 49.46) | 44.0 (43.32, 44.57)* | 48.2 (46.58, 49.83) | 39.2 (34.40, 44.03)* |
* p < 0.001 for no fracture vs. fracture within race.
† p < 0.01 for no fracture vs. fracture within race.
‡ p < 0.05 for no fracture vs. fracture within race.
§ Race-specific reference values used for calculation of T-scores.
¶ Lumbar spine BMD and BMC estimated from whole body scans in black women.