Table 1.
Patient characteristics in the development, validation, and kidney donor data sets.
| Characteristic | Development | Validation | Kidney donors |
|---|---|---|---|
| Number of patients | 370 | 266 | 287 |
| Age (years) | 55 ± 15 | 55 ± 15 | 54 ± 12 |
| Sex (male/female) | 208/162 | 149/117 | 112/175 |
| Weight (kg) | 78 ± 18 | 79 ± 18 | 76 ± 12 |
| Stature (cm) | 173 ± 10 | 173 ± 10 | 172 ± 13 |
| BMI (kg/m2) | 26 ± 6 | 26 ± 5 | 25 ± 3 |
| BSA (m2) | 1.91 ± 0.23 | 1.91 ± 0.25 | 1.89 ± 0.19 |
| In-patient/out-patient | 120/250 | 96/170 | 0/287 |
| Urine creatinine (mmol/day) | 11 ± 4 | 11 ± 4 | 12 ± 5 |
| Psoas volume > − 15HU (cm2) | 19 ± 7 | 18 ± 7 | 18 ± 6 |
| Psoas mean RA > − 15HU (HU) | 44 ± 9 | 44 ± 9 | 48 ± 6 |
| Long spine volume > − 15HU (cm2) | 44 ± 10 | 43 ± 12 | 46 ± 10 |
| Long spine mean RA > − 15HU (HU) | 38 ± 11 | 37 ± 12 | 44 ± 9 |
| Abdominal wall volume > − 15HU (cm2) | 68 ± 20 | 67 ± 20 | 66 ± 18 |
| Abdominal wall mean RA > − 15HU (HU) | 34 ± 11 | 33 ± 11 | 36 ± 8 |
Values are expressed as mean ± SD.
BMI body mass index, BSA body surface area, RA radiation attenuation, HU hounsfield units.