Table 2 Quality assessment of external validity, risk of bias, and presentation of results
Section | Assessment criteria | A | B | C | D | E | F | G | H | J | K | L | M | N | 0 | P | Q | R | S | T | U | V | W | X | Y | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | Aydogan 2003/2004 [24] | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 |
| Â | Kim 2004 [17] | 0.5 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 0.5 | 1 | 0 | 1 | 1 | 0 | 0 | 15.5 |
2 | Conroy 1998 [22] | 0 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10 |
Engebretsen 2010 [23] | 0 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 18 | |
| Â | Tanaka 2000 [18] | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 14 |
3 | Deutscher 2009 [31] | 1 | 0 | 0.5 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0.5 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 16 |
Griggs 2000 [25] | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 6 | |
Hung 2010 [20] | 0 | 0.5 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 0.5 | 1 | 0 | 0 | 1 | 1 | 1 | 16 | |
Kennedy 2006 [32] | 1 | 0.5 | 0.5 | 0.5 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 0.5 | 1 | 1 | 1 | 14 | |
Mao 1997 [26] | 0 | 0.5 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0.5 | 0 | 0 | 0 | 0 | 0 | 1 | 8 | |
1 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 18 | ||
Ryall 2007 [16] | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0.5 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 13.5 | |
Sindhu 2012 [29] | 1 | 0 | 0.5 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 0.5 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | |
Tyler 2010 [28] | 0 | 0.5 | 0 | 1 | 1 | 0.5 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 9 | |
Virta 2009 [27] | 0 | 0.5 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 8.5 | |
Yang 2008 [19] | 0 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 0.5 | 1 | 0 | 0 | 1 | 1 | 1 | 15.5 |