Table 3 Methodological quality of the systematic reviews included in the overview
| Author, year |
Methodological quality (AMSTAR) |
|---|---|
| Thorpe et al., 2018 [18] | 12/16 – moderate |
| Sommer et al.,2017 [19] | 10/16 – low |
| Smith et al., 2011 [20] | 15/16- high |
| Roskell et al., 2011 [6] | 13/16 – moderate |
| Häuser et al., 2011 [21] | 14/16 – high |
| Häuser et al., 2009 [5] | 14/16 – high |
| Üçeyler et al., 2008 [22] | 9/16 – very low |
| Perrot et al., 2008 [23] | 7/16 – very low |