Densitometric Measurements for Total Spine and L1–L4 Vertebrae
| Results | |||||
| Vertebra | Without cushion | With cushion | Mean difference | 95% confidence interval | P |
| Area | |||||
| L1 | 12.24 (±1.49) | 12.32 (±1.52) | −0.08 (±0.48) | −0.20–0.05 | 0.214 |
| L2 | 13.80 (±1.69) | 13.74 (±1.54) | 0.06 (±0.51) | −0.07–0.19 | 0.355 |
| L3 | 14.88 (±1.86) | 14.97 (±1.71) | −0.08 (±0.42) | −0.19–0.03 | 0.135 |
| L4 | 15.80 (±1.84) | 15.99 (±1.88) | −0.19 (±0.54) | −0.33 to −0.05 | 0.009* |
| Total | 56.73 (±6.37) | 57.06 (±6.14) | −0.33 (±0.78) | −0.53 to −0.13 | 0.002* |
| Bone mineral content (total) | 49.96 (±10.22) | 50.09 (±10.16) | −0.13 (±0.87) | −0.36–0.09 | 0.245 |
| BMD | |||||
| L1 | 0.774 (±0.14) | 0.774 (±0.15) | 0.000 (±0.02) | −0.005–0.005 | 0.906 |
| L2 | 0.868 (±0.14) | 0.864 (±0.14) | 0.004 (±0.02) | −0.001–0.009 | 0.108 |
| L3 | 0.905 (±0.14) | 0.902 (±0.14) | 0.003 (±0.02) | −0.001–0.007 | 0.189 |
| L4 | 0.940 (±0.14) | 0.935 (±0.14) | 0.006 (±0.02) | 0.001–0.010 | 0.011* |
| Total | 0.878 (±0.13) | 0.875 (±0.13) | 0.003 (±0.01) | 0.001–0.006 | 0.018* |
| T score (total) | −1.57 (±1.2) | −1.60 (±1.2) | 0.03 (±0.1) | 0.00–0.05 | 0.046* |
| z score (total) | −0.42 (±1.3) | −0.45 (±1.3) | 0.03 (±0.1) | −0.00–0.05 | 0.096 |
*Statistically significant P value.