Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Grading for the strength of recommendation
| Strength of recommendation | Grading | Note |
|---|---|---|
| Strongly recommended | Grade A | Positive rating is ahead for the 4 items below* |
| Weakly recommended | Grade B | Negative rating is ahead for the 4 items below* |
*Certainty of overall evidence, balance of benefits and harms, patient preferences and values; and costs
