Table 3 GRADE approach
Study identifier | Type of Study | Factor of downgrade | Factor of escalation | Level of evidence | ||||
|---|---|---|---|---|---|---|---|---|
Risk of bias | inconsistency | indirectness | imprecision | Publication bias | ||||
Mehri Jamilian, et al. [25] | RCT | 0 | -1 | 0 | 0 | 0 | None | Medium |
M. Razavi, et al. [26] | RCT | -1 | 0 | 0 | -1 | 0 | None | Low |
Fatemeh Mohammad Hosseinzadeh, et al. [27] | RCT | -1 | 0 | 0 | 0 | 0 | None | Medium |
Mehri Jamilian, et al. [28] | RCT | -1 | 0 | 0 | 0 | 0 | None | Medium |
Shahrzad Zadeh Modarres, et al. [29] | RCT | -1 | 0 | 0 | 0 | 0 | None | Medium |
Zahra Heidar, et al. [30] | RCT | -1 | 0 | 0 | -1 | 0 | None | Low |
Batool Hossein Rashidi, et al. [31] | RCT | 0 | 0 | 0 | -1 | 0 | None | Medium |