Table 4. Methodologic information.
| Primary Study Design | Level of Evidence | Software use | Grade Use | Sensitivity/Subgroup Analysis | Publication Bias | |
|---|---|---|---|---|---|---|
| Liu B (2020) | RCT | I | RevMan | No | Yes | No |
| Kong X (2020) | RCT | I | RevMan | No | No | Yes |
| Li N (2020) | RCT | I | RevMan | No | Yes | No |
| Luo X (2012) | RCT | I | RevMan | No | Yes | No |
| Kumar P (2019) | RCT | I | RevMan | Yes | Yes | No |
| Azegami S (2011) | RCT | I | NA | No | No | No |
| Li T (2013) | RCT | I | RevMan | Yes | Yes | No |
| Ning G (2014) | RCT | I | STATA | No | Yes | Yes |
| Lin FF (2019) | RCT | I | RevMan | No | Yes | No |
| Veldman HD (2017) | RCT | I | RevMan | No | No | Yes |
| Nantha Kumar N (2020) | RCT | I | STATA | No | Yes | Yes |
| Li L (2021) | RCT | I | RevMan | Yes | Yes | Yes |