Table 1. Study data.
| First author | Year | Locations/country | Study type | No. of centers | Study period | Access | Patient number | VARC |
|---|---|---|---|---|---|---|---|---|
| Khan | 2018 | US | Single center | 1 | 2013–2015 | TAx, DAo | 51 | 2 |
| Damluji | 2018 | US, France | Multi-center | 3 | 2008–2017 | TAx, DAo | 84 | 2 |
| Fiorina | 2016 | Italy | Multi-center | 4 | 2007–2014 | TAx, DAo | 147 | 2 |
| Adamo | 2015 | Italy | Single center | 1 | 2007–2014 | TAx, DAo | 32 | 2 |
| Zhan | 2020 | US | Single center | 1 | 2015–2018 | TAx | 10 | 2 |
| Dahle | 2019 | US | Multi-center | NA | 2015–2018 | TAx | 1249 | 2 |
| Hysi | 2019 | France | Single center | 1 | 2015–2017 | TAx | 43 | 2 |
| Gleason | 2018 | US | Multi-center | 45 | NA | TAx | 202 | 1 |
| Terzian | 2017 | France | Single center | 1 | 2006–2014 | TAx | 36 | 1 |
| Schäfer | 2017 | Germany | Multi-center | 2 | 2010–2016 | TAx | 100 | 2 |
| Laflamme | 2014 | Canada | Single center | 1 | 2010–2012 | TAx | 18 | 2 |
| Muensterer | 2013 | Germany | Single center | 1 | 2007–2011 | TAx | 40 | 2 |
| Testa | 2012 | Italy | Single center | 1 | NA | TAx | 70 | 1 |
| Gilard | 2012 | France | Multi-center | 34 | 2010–2011 | TAx | 184 | 1 |
| Romano | 2019 | France | Single center | 1 | 2011–2014 | DAo | 265 | 2 |
| Cocchieria | 2019 | Eurpoe | Multi-center | 18 | 2013–2015 | DAo | 253 | 2 |
| D’Ancona | 2019 | German | Single center | 1 | 2012–2014 | DAo | 106 | 2 |
| Petzina | 2017 | Germany | Single center | 1 | 2012–2014 | DAo | 99 | 2 |
| Bruschi | 2017 | Europe | Multi-center | 9 | 2012–2014 | DAo | 92 | 2 |
| Bonaros | 2017 | Europe | Multi-center | 18 | 2013–2015 | DAo | 301 | 2 |
| Ropponen | 2016 | Finland | Single center | 1 | 2008–2014 | DAo | 36 | 1 |
| Arai | 2016 | France | Single center | 1 | 2011–2014 | DAo | 289 | 2 |
| Wendt | 2015 | Germany | Single center | 1 | 2012–2014 | DAo | 30 | 1 |
| Thourani | 2015 | US | Multi-center | NA | 2011–2014 | DAo | 868 | 2 |
| Ribeiro | 2015 | Canada | Single center | 1 | 2007–2015 | DAo | 45 | 2 |
| Ramlawi | 2015 | US | Single center | 1 | 2011–2015 | DAo | 78 | 2 |
| Okuyama | 2015 | US | Single center | 1 | 2007–2014 | DAo | 51 | 2 |
| Jagielak | 2015 | Poland | Multi-center | NA | 2013–2014 | DAo | 32 | 2 |
| Bruschi | 2015 | Italy | Single center | 1 | 2008–2013 | DAo | 50 | 2 |
| Spargias | 2014 | Greece | Single center | 1 | NA | DAo | 25 | 1 |
| Dahle | 2014 | Norway | Single center | 1 | 2009–2013 | DAo | 30 | 1 |
Note:
Basic information of studies included in the meta-analysis. DAo, direct aortic; NA, not available; VARC, Valve Academic Research Consortium; TAx, transaxillary; US, the United States.