Table 2.
Quality assessment of non-RCTs.
| Study | Publication year | NOS score |
|---|---|---|
| Ben-Dor [40] | 2021 | 8 |
| Bhat [41] | 2021 | 9 |
| Christ [42] | 2015 | 8 |
| De Poli [43] | 2014 | 9 |
| De Poli past [43] | 2014 | 7 |
| Iqtidar [56] | 2011 | 8 |
| Junquera [57] | 2021 | 7 |
| Kuno [58] | 2021 | 9 |
| Leclercq [44] | 2015 | 8 |
| Lupi [45] | 2012 | 7 |
| Mirza [46] | 2014 | 8 |
| Mohammed [47] | 2021 | 9 |
| Mohanty [48] | 2019 | 7 |
| O'Neill [49] | 2013 | 8 |
| Owens [50] | 2017 | 8 |
| Pieper [51] | 2016 | 8 |
| Sekhar [52] | 2016 | 8 |
| Stegemann [53] | 2011 | 7 |
| Su [54] | 2018 | 8 |
| Wei [55] | 2020 | 8 |
RCT = randomized controlled trial; NOS = Newcastle-Ottawa scale.