Table A1.
Newcastle–Ottawa scale.
| Single Arm Studies | ||||||
|---|---|---|---|---|---|---|
| Name | Country | Study Design | Selection (Max 5) | Comparability (Max 1) | Exposure (Max 2) | Tot |
| Colomer 2008 [8] | Spain | Prospective Monocentric Study | 5 | 0 | 1 | 6 |
| Facer 2019 [21] | USA | Retrospective Cohort Multicenter Study | 3 | 1 | 1 | 5 |
| Gallotta 2021 [22] | Italy | Retrospective Observational Multicenter Study | 4 | 1 | 2 | 7 |
| Ghezzi 2011 [23] | Italy | Prospective monocentrc Study | 4 | 1 | 2 | 7 |
| Lee 2017 [24] | Taiwan | Retrospective Observational Monocentric study | 4 | 1 | 1 | 6 |
| Muzii 2008 [25] | Italy | Prospective Observational Study | 3 | 1 | 2 | 6 |
| Nezhat 2008 [10] | USA | Retrospective Observational Monocentric study | 3 | 1 | 1 | 5 |
| Tozzi 2003 [26] | Germany | Prospective Observational Study | 4 | 1 | 1 | 6 |
| Comparative Studies, Included for meta-analysis | ||||||
| Chi 2005 [27] | USA | Retrospective Case-Control Monocentric Study |
3 | 0 | 1 | 4 |
| Ditto 2016 [28] | Italy | Retrospective Case-Control Multicentric study | 4 | 1 | 1 | 6 |
| Gallotta 2016 [29] | Italy | Retrospective Case-Control Multicentric study | 5 | 1 | 1 | 7 |
| Koo 2014 [30] | Korea | Retrospective Case-Control Monocentric study | 3 | 1 | 1 | 5 |
| Liu 2013 [31] | China | Retrospective Case-Control Monocentric study | 4 | 1 | 2 | 7 |
| Lu 2016 [32] | Chin | Retrospective Case-Control Monocentric study | 4 | 1 | 1 | 6 |
| Melamed 2016 [33] | USA | Retrospective Observational Multicentric study | 4 | 1 | 1 | 6 |
| Merlier 2020 [34] | France | Retrospective Case-Control Multicentric study | 5 | 1 | 2 | 8 |
| Minig 2016 [35] | Spain | retrospective comparative observational study | 5 | 1 | 2 | 7 |
| Park 2018 [11] | USA | Retrospective Case-Control Monocentric study | 4 | 1 | 1 | 6 |
| Wu 2009 [36] | Taiwan | Retrospective Case-Control Monocentric study | 4 | 1 | 2 | 7 |