Patient characteristics and mortality risks of cases for which surgeons agreed and disagreed about treatment choice with the maximised life expectancy model
| Category 1 (n=374) | Category 2 (n=64) | Category 3 (n=16) | Category 4 (n=88) | |
|---|---|---|---|---|
| Number of cases is the total of all cases evaluated (137 × 4 (surgeons) = 548 cases minus the missing cases). | ||||
| Category 1: both the surgeons and the model recommended surgery; category 2: both the surgeons and the model recommended watchful waiting; category 3: surgeons chose surgery and the model recommended watchful waiting; category 4: surgeons chose watchful waiting and the decision model recommended surgery. | ||||
| Age of patient | 66.3 | 71.4 | 77.2 | 62.3 |
| Aneurysm size | 6.8 | 4.3 | 5.7 | 4.0 |
| No of risk factors | 2.5 | 4.2 | 4.4 | 1.7 |
| Operative mortality | 4.5% | 16.1% | 26.1% | 2.0% |
| Rupture risk 1 year | 7.8% | 1.8% | 5.1% | 0.8% |
| Rupture risk 5 years | 26.4% | 9.7% | 14.1% | 5.8% |