Table 2.
Change of body composition parameters during radiotherapy and androgen deprivation therapy.
| Variable | First CT scan | Second CT scan | Absolute change per 180 days | Relative Change per 180 days (%) | ||||
|---|---|---|---|---|---|---|---|---|
| Mean ± SD | Mean ± SD | Mean | 95% CI | p-value | Mean | 95% CI | p-value | |
| BMI (kg/m2) | 24.2 ± 3.5 | 24.5 ± 3.5 | 0.3 | 0.1 to 0.5 | 0.005 | 1.4 | 0.5 to 2.3 | 0.003 |
| SMI (cm2/m2) | 47.2 ± 7.4 | 44.5 ± 7.3 | -2.7 | -3.4 to -2.0 | <0.001 | -5.5 | -7.0 to -4.0 | <0.001 |
| SMD (HU) | 37.8 ± 5.6 | 34.9 ± 5.9 | -2.9 | -3.4 to -2.3 | <0.001 | -7.6 | -9.0 to -6.1 | <0.001 |
| SATI (cm2/m2) | 39.9 ± 13.6 | 44.7 ± 14.7 | 5.0 | 3.7 to 6.3 | <0.001 | 14.7 | 10.9 to 18.5 | <0.001 |
| VATI (cm2/m2) | 55.2 ± 28.0 | 60.1 ± 29.6 | 4.9 | 2.9 to 7.1 | <0.001 | 13.3 | 8.5 to 18.1 | <0.001 |
| TATI (cm2/m2) | 95.1 ± 37.7 | 104.6 ± 40.4 | 9.8 | 6.8 to 12.7 | <0.001 | 12.6 | 9.0 to 16.2 | <0.001 |
BMI, body mass index; CI, confidence interval; CT, computed tomography; HU, Hounsfield unit; SD, standard deviation; SMD, skeletal muscle radiodensity; SMI, skeletal muscle index; SATI, subcutaneous adipose tissue index; TATI, total adipose tissue index; VATI, visceral adipose tissue index.