Table 2 NOS scores for six nonrandomized clinical controlled studies
Included study | Selection | Comparability | Outcome | Final score |
|---|---|---|---|---|
Guo F 2017 | ✩✩✩ | ✩ | ✩✩ | ✩✩✩✩✩✩ |
Jiang L 2017 | ✩✩✩ | ✩✩ | ✩✩ | ✩✩✩✩✩✩✩ |
Liu K 2016 | ✩✩✩ | ✩ | ✩✩✩ | ✩✩✩✩✩✩✩ |
Pan Y 2018 | ✩✩✩ | ✩✩ | ✩ | ✩✩✩✩✩✩ |
Pu X 2018 | ✩✩✩ | ✩✩ | ✩✩✩ | ✩✩✩✩✩✩✩✩ |
Zhang Y 2015 | ✩✩✩ | ✩✩ | ✩✩✩ | ✩✩✩✩✩✩✩✩ |