Patient demographics and surgery data.
| Patient Data | Group A (n = 43) | Group B (n = 27) | P Value |
| Sex ratio, female/male | 25/18 | 19/8 | 0.32a |
| Age, y, mean ± SD (range) | 76 ± 11 (43–89) | 67 ± 16 (34–96) | 0.02b |
| Body mass index, kg/m2, mean ± SD (range) | 25 ± 3 (19–30) | 24 ± 5 (17–33) | 0.46b |
| Magerl classification, n (%) | 0.61a | ||
| A1 | 50 (85) | 45 (90) | |
| A2 | 2 (3) | 2 (4) | |
| A3 | 7 (12) | 3 (6) | |
| Location of the fractures | 0.08a | ||
| Thoracic spine, n (%) | 32 (54) | 18 (36) | |
| Lumbar spine, n (%) | 27 (46) | 32 (64) | |
| Operative time, min, mean ± SD (range) | 34.6 ± 14.3 (15–90) | 41.9 ± 19.0 (12–90) | 0.13b |
| Operative time per level, min, mean ± SD (range) | 27.3 ± 10.9 (15–60) | 28.9 ± 13.4 (4.4–60) | 0.74b |
| Cemented vertebrae, n | 59 | 50 | |
| Vertebroplasties, n (%) | 39 (66) | 30 (60) | 0.55a |
| Kyphoplasties, n (%) | 20 (34) | 20 (40) | |
| Unipedicular approaches, n (%) | 25 (42) | 26 (52) | 0.04a |
| Surgeon experience, senior/junior | 16/27 | 6/21 | 0.29a |
| Cement volume injected, cc, mean ± SD (range) | 6.8 ± 3.8 (2–18) | 8.2 ± 3.5 (4–18) | 0.13b |
| Cement volume injected per level, cc, mean ± SD (range) | 4.9 ± 1.5 (2–7) | 5.3 ± 1.5 (2–8) | 0.30b |