Cases of incident heart failure
| Study author | Year | n/N | hf/HF |
| Benotti et al 30 | 2017 | 1724/1724 | 24/55 |
| Ikramuddin et al 31 | 2015 | 60/59 | 0/1 |
| Johnson et al 32 | 2013 | 2580/13 371 | 35/1338 |
| Karason et al 33 | 2013 | 2010/2037 | 91/152 |
| Persson et al 34 | 2017 | 22295/25 564 | 89/944 |
| Sanchis et al 35 | 2015 | 108/90 | 0/1 |
| Sundström et al 36 | 2017 | 25 804/13 701 | 44/29 |
HF, cases of incident heart failure in control group; N, sample size control group; hf, cases of incident heart failure in surgical group; n, sample size surgical group.