TABLE 4.
Modified Jadad scale for the included RCTs.
| Author (year) | Generation of randomization | Randomization allocation | Blinding | Dropouts and withdrawals | Modified | quality |
|---|---|---|---|---|---|---|
| allocation sequence (0–2 points) | concealment (0–2 points) | (0–2 points) | (0–1 point) | Jadad scale | ||
| Yan et al. (2021) | 2 | 1 | 0 | 1 | 4 | High |
| Wang ZZ et al. (2021) | 1 | 0 | 0 | 0 | 1 | Low |
| Zhang. (2021) | 1 | 0 | 0 | 0 | 1 | Low |
| Wang YL et al. (2021) | 1 | 0 | 0 | 1 | 2 | Low |
| Zheng. (2021) | 2 | 1 | 0 | 0 | 3 | Low |
| Xiao et al. (2021) | 2 | 1 | 0 | 0 | 3 | Low |
| Liu et al. (2020a) | 2 | 2 | 0 | 0 | 4 | High |
| Liu et al. (2020b) | 2 | 2 | 0 | 0 | 4 | High |
| Wang F et al. (2021) | 2 | 1 | 0 | 1 | 4 | High |
| Yang et al. (2021) | 1 | 0 | 0 | 0 | 1 | Low |
| Liu et al. (2023) | 2 | 1 | 0 | 1 | 4 | High |
| Xie et al. (2023) | 1 | 0 | 0 | 0 | 1 | Low |