Evaluation of discrimination and calibration abilities of the models
| Model 1* | Model 2* | |||||
| Derivation Group | Validation Group | Total group (1671 IAs) | Derivation Group | Validation Group | Total group (400 IAs) | |
| Overall performance | ||||||
| Brier score | 0.073 | 0.085 | 0.083 | 0.199 | 0.207 | 0.202 |
| Discrimination | ||||||
| AUC (95%) | 0.743 (0.690 to 0.796) | 0.772 (0.686 to 0.858) | 0.753 (0.712 to 0.794) | 0.739 (0.677 to 0.801) | 0.717 (0.632 to 0.802) | 0.730 (0.683 to 0.782) |
| Calibration, goodness of fit | ||||||
| P value of Hosmer-Lemeshow test | 0.9146 | 0.4654 | 0.983 | 0.893 | 0.269 | 0.3663 |
*Model 1 was developed by all 1671 multiple aneurysms in patients with or without SAH; model 2 was developed by 400 multiple aneurysms in 158 patients with SAH.
AUC, areas under curve; IA, intracranial aneurysm; SAH, subarachnoid haemorrhage.