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Table 2 Newcastle–Ottawa quality assessment

From: Can different osteotomies have an influence on surgically assisted rapid maxillary expansion? A systematic review

Author, year

Newcastle–Ottawa scale outcome (range 0–9)

Quality assessment

1. Matteini, 2001 [26]

5

Fair

2. Babacan, 2006 [27]

6

Good

3. Goldenberg, 2007 [28]

5

Fair

4. Landes, 2009 [29]

6

Good

5. Marchetti, 2009 [30]

6

Good

6. Laudemann, 2009 [31]

6

Good

7. Seeberger, 2010 [32]

6

Good

8. Alfaro, 2010 [33]

3

Fair

9. De Assis, 2010 [34]

6

Good

10. Landim, 2011 [35]

5

Fair

11. Landes, 2012 [37] 

6

Good

12. Iodice, 2013 [38]

5

Fair

13. Sygouros, 2014 [39]

4

Fair

14. Habersack, 2014 [40]

7

Good

15. Daif, 2014 [5]

5

Fair

16. Adolph,2012 [41]

3

Fair

17. Yao, 2015 [42]

4

Fair

18. Seeberger, 2015 [66]

6

Good

19. Dergin, 2015 [43]

3

Fair

20. Zandi, 2016 [44]

5

Fair

21. Oliveira, 2016 [45]

5

Fair

22. Jensen, 2017 [46]

6

Good

23. Verquin, 2017 [47]

5

Fair

24. Alves, 2017 [48]

6

Good

25. Cakarer, 2017 [67]

4

Fair

26. Kim, 2018 [51]

5

Fair

27. Krzysztof, 2018

5

Fair

28. Huizinga, 2018 [6]

6

Good

29. Möhlhenrich, 2020 [54]

5

Fair

30. Keskin-Yalcin, 2020 [55]

4

Fair

31. Gursoytrak, 2021 [56]

6

Good

32. Da Costa Senior, 2021 [57]

5

Fair

33. Pereira, 2022 [59]

6

Good

34. Orion, 2022 [60]

4

Fair

35. Felipe, 2022 [61]

5

Fair

36. Carvalho, 2023 [62]

6

Good