Table 2 Quality of the nine included studies by Jadad scale
Study; Year | Blinding | Randomization | Withdrawals and dropouts descriptions | Total Score |
|---|---|---|---|---|
Allaert, 2013 | 1 | 1 | 1 | 3 |
Arzilli, 1986 | Not clear | Not clear | Not clear | Not clear |
Barros, 2015 | 2 | 2 | 0 | 4 |
Gilleran, 1996 | Not clear | Not clear | Not clear | Not clear |
Pereira, 2005 | 2 | 1 | 1 | 4 |
Sarkkinen, 2011 | 1 | 1 | 0 | 2 |
Yang(a), 2018 | 1 | 1 | 0 | 2 |
Yang(b), 2018 | 1 | 1 | 0 | 2 |
Zhao, 2014 | 2 | 2 | 1 | 5 |
Zhou, 2009 | 2 | 2 | 1 | 5 |
Zhou, 2013 | 2 | 2 | 1 | 5 |