Table 2.
Quality assessment of four clinical trials based on the Jadad scale
| Clinical trial | Randomization | Double blindness | Reported withdrawals and dropouts | Jadad score (max =5) | Risk of bias | ||
|---|---|---|---|---|---|---|---|
| Reported | Appropriately | Reported | Appropriately | ||||
| Jones et al., 2020 | 00 | 00 | 00 | 00 | 111 | 1/51/5 | High |
| Hutchison et al., 2019 | 1 | 0 | 0 | 0 | 1 | 2/5 | High |
| Jamshed et al., 2019 | 1 | 1 | 0 | 0 | 1 | 3/5 | Low |
| Sutton et al., 2018 | 1 | 1 | 0 | 0 | 1 | 3/5 | Low |
| Nas et al., 2017 | 1 | 1 | 0 | 0 | 0 | 2/5 | High |
Jadad score≥3; high methodological quality and Jadad score ≥2; low methodological quality