Table 2 Newcastle–Ottawa scale for included non-RCT studies
Author | Year | Study design | Selection | Comparability | Outcome | total | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 1 | 2 | 1 | 2 | 3 | ||||
Alex, A.K [12] | 2017 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
Chouhan [13] | 2018 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 8 |
des Guetz, G [14] | 2007 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 8 |
Drucker, A [15] | 2013 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 7 |
Elsaleh, H [16] | 2001 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 8 |
Fujiyoshi, K [17] | 2017 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 8 |
Guidoboni, M [7]. | 2001 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 8 |
Hemmink i [18] | 2000 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
Jover [19] | 2006 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | 7 |
Jung, S.H [20]. | 2016 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
Kim, C. G [21]. | 2016 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 8 |
Kim, J.E [23]. | 2017 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 8 |
Kim, J.E [22]. | 2011 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
Kim, S.H [24]. | 2013 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | 7 |
Lanza, G [44]. | 2006 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 7 |
Li, P [25]. | 2017 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
Liu [26] | 2018 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
Ma, J [27]. | 2015 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
Malesci, A [28]. | 2007 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 7 |
Mohan, H.M [29]. | 2016 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
Oh, S.Y [32]. | 2013 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | 7 |
Tan, W. J [37]. | 2017 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 8 |
Tran, B [38]. | 2011 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 9 |
Wright, C. M [41]. | 2000 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 8 |
Zaanan, A [43]. | 2011 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 6 |
Zaanan, A [42]. | 2010 | Non-RCT | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 8 |