The grade of evidence was determined using the guidelines of the GRADE working group.
The grade of evidence was determined following the guidelines of the GRADE (Grading of Recommendations, Assessment, Development, and Evaluation) working group [ 14].
The NHS would never pay for a treatment with this grade of evidence.
In order to have a high grade of evidence, the studies should have sufficient power, be randomized and double blinded.
In the line of conservative treatment modalities, continuous veno-venous haemofiltration (CVVH) is positioned mostly as an option for treatment of renal dysfunction with relatively low C grade of evidence [7].
Grade of evidence I; grade of recommendation A. Tuberculous meningitis carries a high mortality.
Grade of evidence II; grade of recommendation C. Onchocerca volvulus microfilariae are usually treated with ivermectin.
Each statement includes its grade of evidence, the voting results (table 2) and a brief discussion.
For example, the phrase 'probiotics may help to…' was used to distinguish statements with a low grade of evidence from those with a moderate or high grade of evidence ('probiotics help to…').
Further specialist advice (ideally sought before the procedure) may be appropriate (GRADE of evidence: low; Strength of recommendation: weak).
The grade of evidence is currently at level III, as described in the SIGN methodology for clinical guidelines [ 121].
