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.
Levels of evidence for studies evaluating the diagnosis and therapy of AIHA in children.
| Level of evidence | Study design |
|---|---|
| I (strongest) | Prospective randomised trial with high statistical value |
| II | Prospective randomised trial with lower statistical value |
| III | Non-randomised study with concurrent control group |
| IV | Non-randomised study with historical control group |
| V | Case report(s) with no control group |
