Table 1 Summary of demographic variables for development, internal validation, and external validation
Variables | Development set (n = 923/1042)* | Internal validation set (n = 101/179) | External validation set (n = 301/448) | |||
|---|---|---|---|---|---|---|
Demographics | ||||||
Female (%, female:male) | 46.3 (427:496) | 36.6 (37:64) | 37.5 (113:188) | |||
Age | 60.3 ± 14.0 | 60.5 ± 12.1 | 65.4 ± 14.6 | |||
Height (cm) | 163.0 ± 9.1 | 163.8 ± 8.9 | 162.7 ± 9.8 | |||
Weight (g) | 62.4 ± 12.2 | 64.2 ± 13.8 | 62.1 ± 13.2 | |||
BMI | 23.5 ± 3.7 | 23.8 ± 3.8 | 23.4 ± 4.0 | |||
Disease category | Patients | CT scan | Patients | CT scan | Patients | CT scan |
|---|---|---|---|---|---|---|
Cancer | 558 | 620 | 71 | 126 | 62 | 89 |
Benign tumor | 66 | 70 | 8 | 8 | 2 | 2 |
Infection | 62 | 87 | 5 | 19 | 46 | 97 |
Hemorrhage | 11 | 11 | 1 | 1 | 33 | 41 |
Cirrhosis | 14 | 17 | 3 | 6 | 21 | 49 |
Stone | 28 | 36 | 0 | 0 | 4 | 6 |
Cyst | 16 | 18 | 1 | 1 | 0 | 0 |
Transplant | 19 | 22 | 1 | 1 | 0 | 0 |
Blunt trauma | 2 | 2 | 0 | 0 | 33 | 50 |
Health check-up | 147 | 159 | 11 | 17 | 100 | 114 |