Table 2.
Inter-rater reliability of the Cobb angle measurements and end vertebra: Gold standard vs AI
| Parameter | MAD | SD | ICC(95%CI) |
|---|---|---|---|
| Coronal | |||
| Proximal thoracic CA | 1.87° | 1.43° | 0.972(0.953–0.983) |
| Main thoracic CA | 2.23° | 1.80° | 0.987(0.978–0.992) |
| Thoracolumbar/lumbar CA | 2.33° | 1.76° | 0.979(0.965–0.985) |
| Total CA | 2.15° | 1.69° | 0.985(0.979–0.989) |
| UEV | 0.57 | 0.99 | 0.967(0.949–0.978) |
| LEV | 0.53 | 0.71 | 0.982(0.973–0.989) |
| Sagittal | |||
| Proximal thoracic kyphosis | 2.86 | 2.00 | 0.828(0.769–0.873) |
| Mid-thoracic kyphosis | 3.20 | 2.05 | 0.931(0.905–0.949) |
| Thoracolumbar sagittal alignment | 2.11 | 1.75 | 0.875(0.931–0.908) |
| Total CA | 2.72 | 1.99 | 0.927(0.912–0.939) |
MAD: mean absolute difference; SD: standard difference; ICC:intra-class correlation coefficient; CA: Cobb angle