Table 4.

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)