Table 4.
Comparison of age and vBMD in the Grade 1 vertebral fracture (VF) group by number of fractured vertebra (FV) at different age bands♦.
| Agebands | Characteristics | Male | Female | ||||
|---|---|---|---|---|---|---|---|
| FV=1 | FVs≥2 | p | FV=1 | FVs≥2 | p | ||
| 50-64y | Number | 48 | 34 | – | 73 | 10 | – |
| Age (y) | 58.25 ± 4.20 | 57.44 ± 5.00 | 0.427 | 60.00 ± 3.64 | 57.7 ± 4.86 | 0.076 | |
| vBMD (mg/cm3), n (%) | 102.80 ± 21.32 | 107.74 ± 30.79 | 0.392 | 91.30 ± 27.32 | 81.80 ± 37.32 | 0.329 | |
| Normal | 12 (25) | 12 (35.3) | 0.604 | 9 (12.3) | 1 (10.0) | 0.512 | |
| Osteopenia | 28 (48.3) | 17 (50.0) | 41 (56.2) | 4 (40.0) | |||
| Osteoporosis | 8 (17.7) | 5 (14.7) | 23 (31.5) | 5 (50.0) | |||
| ≥65y | Number | 64 | 37 | – | 106 | 36 | – |
| Age (y) | 70.95 ± 4.47 | 71.30 ± 4.39 | 0.707 | 71.40 ± 4.30 | 70.81 ± 4.20 | 0.475 | |
| vBMD (mg/cm3), n (%) | 92.70 ± 30.85 | 83.90 ± 31.45 | 0.173 | 61.96 ± 24.43 | 60.63 ± 22.08 | 0.773 | |
| Normal | 12 (18.7) | 5 (13.5) | 0.857 | 4 (3.7) | 0 (0) | 0.463 | |
| Osteopenia | 30 (46.9) | 14 (37.8) | 20 (18.9) | 6 (16.7) | |||
| Osteoporosis | 22 (34.4) | 18 (48.7) | 82 (77.4) | 30 (83.3) | |||
VF, vertebral fracture; FV, fractured vertebra; vBMD, QCT volumetric bone mineral density; y, years; p, p-value.
♦, <50y group is excluded due to small sample size.
Continuous variables were shown as mean ± standard deviance, and were tested by independent-samples t-test; ordinal categorical variables were shown as frequency(n) and percentage (%), and were tested by Kruskal-Wallis H tests.