Table 3 The quality assessment of non-RCTs
Researcher | Year | Population selection | Comparability between groups | Outcome data | Score |
|---|---|---|---|---|---|
Lv Y | 2015 | 2 | 2 | 3 | 7 |
Yang L | 2018 | 1 | 2 | 3 | 6 |
Zheng X | 2018 | 2 | 2 | 3 | 7 |
Wang W | 2017 | 2 | 2 | 3 | 7 |
Xun Yu | 2018 | 1 | 2 | 3 | 6 |
Shi HL | 2004 | 2 | 2 | 3 | 7 |
Yang L | 2005 | 1 | 2 | 3 | 6 |
Hong S | 2016 | 2 | 2 | 3 | 7 |