Table 2 Grades of Recommendation.
From: "Getting your message through": an editorial guide for meeting publication standards
Grades | Study design |
|---|---|
A | Consistent level 1 studies |
B | Consistent level 2 or 3 studies or extrapolations from level 1 studies |
C | Level 4 studies or extrapolations from level 2 or 3 studies |
D | Level 5 evidence or troublingly inconsistent or inconclusive studies of any level |