Table 2.
Bone density of both groups in metastatic bone before RT (baseline), as well as 3 and 6 months after RT
| IMRT group | Within group | 3DCRT group | Within group | Differences between groups | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| n | Median | SD | p-value | n | Median | SD | p-value | HL | 95% CI | p-value | |
| All metastases | |||||||||||
| HU Baseline |
30 | 258.5 | 183.3 | 30 | 195.0 | 125.4 | 62 | 5.0–126.0 | 0.037 | ||
| HU T2 | 20 | 419.3 | 232.7 | 19 | 300.0 | 165.7 | −59.5 | −194.0-59.0 | 0.232 | ||
| HU T3 | 18 | 416.8 | 277.7 | 12 | 454.0 | 185.4 | 61.5 | − 146.0-229 | 0.641 | ||
| 3 months | |||||||||||
| HU T0-T2 | 20 | 90.5 | 134.2 | < 0.01 | 19 | 35.0 | 87.1 | < 0.01 | −25.0 | − 86.0-42.0 | 0.407 |
| HU T0-T2 (%) | 20 | 24.8 | 51.0 | < 0.01 | 19 | 18.5 | 38.7 | < 0.01 | −4.5 | −25.5-21.9 | 0.723 |
| 6 months | |||||||||||
| HU T0-T3 | 18 | 124.0 | 166.0 | 0.023 | 12 | 132.0 | 157.7 | < 0.01 | 59.0 | −73.0-193.0 | 0.330 |
| HU T0-T3 (%) | 18 | 33.8 | 61.6 | 0.048 | 12 | 48.4 | 70.7 | < 0.01 | 34.0 | −20.3-91.1 | 0.341 |
The results were presented by absolute and relative values (%) of HU within and between groups as median (Hodges–Lehmann estimate) and IQR