Table 2 Quality of evidence according to GRADE approach
Outcome | Participants (studies) | Risk of bias | Inconsistency | Indirectness | Imprecision | Publication bias | Overall Quality of evidence |
|---|---|---|---|---|---|---|---|
Pain (short-term) | 384 (6 trials) | Serious | Serious | Serious | Serious | NA | Very low |
Pain (medium-term) | 144 (3 trials) | Serious | Serious | Not serious | Serious | NA | Very low |
Pain (long-term) | 263 (3 trials) | Serious | Serious | Serious | Serious | NA | Very low |
Disability (short-term) | 187 (3 trials) | Serious | Serious | Serious | Serious | NA | Very Low |
Disability (medium-term) | 48 (1 trial) | Serious | Serious | Serious | Serious | NA | Very low |
Disability (long-term) | 96 (1 trial) | Serious | Serious | Serious | Serious | NA | Very low |