Table 2.
Basic data of the four groups
| Characteristic | S group (n=48) | L group (n=45) | PS group (n=83) | PL group (n=97) | p-value |
|---|---|---|---|---|---|
| Age (yr) | 77.9±8.3 | 82.3±9.4 | 79.8±6.6 | 84.0±6.6 | 0.00 |
| Sex | 0.11 | ||||
| Female | 28 | 32 | 65 | 66 | |
| Male | 20 | 13 | 18 | 31 | |
| Level of injured vertebrae | |||||
| T4–10 | 2 | 2 | 12 | 6 | |
| T10–L2 | 33 | 26 | 59 | 68 | 0.03 |
| L3–5 | 13 | 17 | 12 | 23 | |
| BMD/YAM (%) | |||||
| Lumber spine | 83.3±25.4 | 82.2±21.5 | 68.7±18.9 | 73.3±17.2 | 0.00 |
| Femur | 72.6±14.7 | 67.7±20.2 | 66.7±14.4 | 64.2±10.2 | 0.04 |
| No. of existing fractured vertebrae | 2.3±0.9 | 2.5±1.1 | 2.3±0.9 | 2.3±0.8 | 0.60 |
| Duration of conservative therapy (day) | 19.4±34.8 | 20.0±55.3 | 16.3±17.7 | 40.5±76.3 | 0.21 |
| No. of SVBFs | 7 | 6 | 10 | 6 | 0.34 |
| Adjacent vertebrae | 5 | 1 | 7 | 6 | 0.43 |
| Distant vertebrae | 2 | 5 | 3 | 0 | 0.00 |
Values are presented as mean±standard deviation or number. A p-value <0.05 is statistically significant.
PTH, parathyroid hormone; S group, no-PTH/short-term intervention group; L group, no-PTH/long-term intervention group: PS group, PTH/short-term intervention group; PL group, PTH/short-term intervention group; BMD/YAM, bone mineral density/young adult mean; SVBF, subsequent vertebral body fracture.