Table 2 Methodological quality of included studies evaluated using the Brink and Louw critical appraisal tool
From: Non-radiographic methods of measuring global sagittal balance: a systematic review
Study | Key information | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | High-quality > 60% |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | de Seze [21] | ✓ | ✗ | ✓ | n/a | n/a | n/a | ✓ | n/a | ✓ | ✗ | ✓ | ✗ | ✓ | 6/9 = 66% |
2 | Grosso 2002 [31] | ✓ | ✓ | n/a | ✗ | ✗ | ✗ | n/a | ✓ | n/a | ✗ | n/a | ✗ | ✓ | 4/9 = 44% |
3 | Kellis 2008 [23] | ✓ | ✓ | n/a | ✓ | ✓ | ✗ | n/a | ✓ | n/a | ✓ | n/a | ✗ | ✓ | 7/9 = 77% |
4 | Knott 2016 [22] | ✓ | ✗ | ✓ | ✗ | ✗ | ✗ | ✓ | ✓ | ✓ | ✓ | ✓ | ✗ | ✓ | 8/13 = 62% |
5 | Legaye 2012 [13] | ✓ | ✗ | ✓ | ✗ | ✗ | ✗ | ✗ | ✗ | ✓ | ✓ | ✓ | ✗ | ✓ | 6/13 = 46% |
6 | Liljenqvist 1998 [19] | ✓ | ✗ | ✓ | n/a | n/a | n/a | ✗ | ✗ | ✓ | ✓ | ✓ | ✗ | ✓ | 6/9 = 66% |
7 | Mannion 2004 [24] | ✓ | ✗ | n/a | ✓ | ✗ | ✗ | n/a | ✗ | n/a | ✓ | n/a | ✗ | ✓ | 4/9 = 44% |
8 | Mohokum 2010 [20] | ✓ | ✓ | n/a | ✗ | ✗ | ✗ | n/a | ✓ | n/a | ✓ | n/a | ✗ | ✓ | 5/9 = 55% |
9 | Milanesi 2011 [25] | ✓ | ✗ | n/a | ✓ | ✓ | ✗ | n/a | ✓ | n/a | ✓ | n/a | ✗ | ✓ | 6/9 = 66% |
10 | Negrini 2001 [26] | ✓ | ✗ | n/a | ✗ | ✗ | ✗ | n/a | ✓ | n/a | ✓ | n/a | ✓ | ✓ | 5/9 = 55% |
11 | Schroeder [27] | ✓ | ✓ | n/a | ✗ | ✓ | ✗ | n/a | ✓ | n/a | ✓ | n/a | ✗ | ✓ | 6/9 = 66% |
12 | Zabjek 1999 [28] | ✓ | ✗ | n/a | ✗ | ✗ | ✓ | n/a | ✓ | n/a | ✓ | n/a | ✗ | ✓ | 5/9 = 55% |
13 | Zaina 2012 [29] | ✗ | ✗ | n/a | ✗ | ✗ | ✗ | n/a | ✓ | n/a | ✓ | n/a | ✗ | ✓ | 4/9 = 44% |
14 | Zheng 2010 [30] | ✓ | ✗ | n/a | ✗ | ✗ | ✗ | n/a | ✓ | n/a | ✓ | n/a | ✗ | ✓ | 4/9 = 44% |