Table 2

Outcomes for matched cohorts

Identifiable linkage
(n=166)
Non-identifiable linkage
(n=169)
Total patient days followed99 24189 736
Follow-up per patient, days
 Mean (SD)597.8 (283.1)531.0 (307.1)
 Median (Q1:Q3)610 (409:807)560 (355:764)
 Range2–11280–1128
All-cause deaths3742
 1-year survival0.873 (0.823 to 0.925) (n=133)0.833 (0.778 to 0.893) (n=122)
 2-year survival0.773 (0.706 to 0.847) (n=58)0.725 (0.652 to 0.807) (n=50)
Subsequent intervention, patients
 Mitral valve replacement66
 Mitral valve repair22
 Other mitral intervention10
 Cardiac pacemaker insertion1012
 Cardioverter defibrillator23