Table 1 Strength of recommendation taxonomy (SORT)
| Strength of recommendation (SOR) |
|---|
| A = based on consistent and good quality patient-oriented evidence |
| B = based on inconsistent or limited quality patient-oriented evidence |
| C = based on consensus, usual practice, opinion, disease-oriented evidence or case series |
| Quality of the evidence (QOE): |
| 1 = good quality, patient-oriented |
| 2 = limited quality, patient-oriented |
| 3 = other evidence (usual practice, opinion, disease oriented evidence) |