Table 3

Pooled results

OutcomePooled estimate (95% CI)Number of studies reporting outcome (participants)
Complications before discharge
 Reoperation during index admission, proportion0.054 (0.010 to 0.099)*5 (422),16–19 25
 Neurologic event, proportion0.007 (0.000 to 0.018)*4 (976)16 18 24 25
Mortality
 30-day survival, proportion0.995 (0.991 to 0.999)9 (1844)15–20 23–25
 Survival at 1 year, proportion0.994 (0.989 to 0.999)5 (1038)16 17 20 24 25
 Survival at 5 years, proportion0.945 (0.898 to 0.993)*4 (1009)17 23–25
 Survival at 10 years, proportion0.912 (0.845 to 0.979)*2 (836)17 24
 Valve-related late mortality at follow-up
  Proportion0.008 (0.000 to 0.019)7 (584)16–20 23 25
  Per 100 patient-years0.2 (0.0 to 0.4)7 (584)16–20 23 25
Complications at follow-up
 Operated valve endocarditis
  Proportion0.011 (0.002 to 0.020)8 (615)16 18–23 25
  Per 100 patient-years0.3 (0.0 to 0.6)8 (615)16 18–23 25
 Thrombosis, embolism, and bleeding
  Proportion0†4 (304)16 20 23 25
  Per 100 patient-years0†4 (304)16 20 23 25
Reinterventions at follow-up
 Reinterventions on operated valve at follow-up
  Proportion0.075 (0.037 to 0.113)*10 (1944)15–18 20–25
  Per 100 patient-years1.3 (0.7 to 1.9)*9 (1385)16–18 20–25
 Freedom from reintervention at 1 year0.952 (0.938 to 0.967)2 (799)16 24
 Freedom from reintervention at 5 years0.934 (0.874 to 0.993)*5 (1026)16 22–25
 Freedom from reintervention at 10 years0.800 (0.760 to 0.839)*2 (1287)15 24
  • The table shows the number of studies reporting each outcome and the corresponding number of participants in these studies.

  • *Weights from random effects analysis. Results without indicator are from fixed-effect analysis with inverse variance weighting.

  • †No CIs computed because of 0 variance in all four studies reporting the outcome.