Table 2. Comparison of bone mineral density (g/cm2) at measured sites according to age groups.
| Groups | Spine (L1-L4) | Femur neck | Ward's triangle | Trochanteric |
|---|---|---|---|---|
| Mean ± SD | Mean ± SD | Mean ± SD | Mean ± SD | |
| Group 1 | ||||
| Patients (n = 71) |
0.928 ± 0.14 | 0.802 ± 0.10 | 0.608 ± 0.10 | 0.660 ± 0.09 |
| Controls (n = 599) |
1.004 ± 0.15 | 0.889 ± 0.12 | 0.690 ± 0.14 | 0.753 ± 0.11 |
| P = 0.132 | P < 0.001 | P = 0.007 | P = 0.011 | |
| Group 2 | ||||
| Patients (n = 93) |
0.831 ± 0.12 | 0.745 ± 0.09 | 0.530 ± 0.09 | 0.629 ± 0.08 |
| Controls (n = 894) |
0.892 ± 0.14 | 0.774 ± 0.09 | 0.555 ± 0.11 | 0.670 ± 0.01 |
| P = 0.527 | P = 0.473 | P = 0.371 | P = 0.247 | |
| Group 3 | ||||
| Patients (n = 42) |
0.816 ± 0.17 | 0.670 ± 0.08 | 0.452 ± 0.07 | 0.554 ± 0.08 |
| Controls (n = 313) |
0.848 ± 0.16 | 0.707 ± 0.12 | 0.488 ± 0.11 | 0.608 ± 0.09 |
| P = 0.724 | P = 0.325 | P = 0.354 | P = 0.582 |
L1-L4, from the first lumbar vertebrae to the fourth vertebrae; SD, standard deviation.