Observed and expected mean survival in patients with bicuspid aortic valve who underwent aortic valve surgery in Stockholm, Sweden, between 2007 and 2020
| Patients (n) | Observed mean survival % (95% CI) | Expected mean survival (%) | Relative survival % (95% CI) | |
| Total study population | 865 | 80 (77 to 84) | 87 | 93 (88 to 97) |
| At 1 year | 807 | 99 (98 to 99) | 99 | 100 (99 to 100) |
| At 5 years | 539 | 94 (92 to 96) | 93 | 101 (99 to 103) |
| At 10 years | 159 | 84 (80 to 87) | 84 | 99 (95 to 103) |
| At 12 years | 55 | 76 (70 to 82) | 80 | 95 (87 to 102) |
| Conditional on 30-day survival | 858 | 82 (78 to 85) | 87 | 94 (90 to 98) |
| At 1 year | 807 | 99 (99 to 100) | 99 | 101 (100 to 101) |
| At 5 years | 539 | 95 (93 to 96) | 93 | 102 (100 to 103) |
| At 10 years | 159 | 84 (80 to 87) | 84 | 100 (95 to 104) |
| At 12 years | 55 | 77 (70 to 82) | 80 | 96 (88 to 103) |
| Sex | ||||
| Female | 220 | 76 (67 to 82) | 88 | 86 (76 to 93) |
| Male | 638 | 82 (78 to 86) | 86 | 95 (90 to 100) |
| Age group (years) | ||||
| <60 | 360 | 94 (89 to 96) | 96 | 97 (92 to 100) |
| 60–69 | 309 | 83 (76 to 88) | 87 | 95 (87 to 101) |
| ≥70 | 196 | 61 (52 to 69) | 68 | 90 (76 to 102) |