| Study | Reason for exclusion |
|---|---|
| Abadi 2008 | No randomization |
| Evans 2007 | Not a clinical trial |
| Harrison 2004 | Before‐after design in 2 sequential groups, no true control group |
| Hassasiri 2002 | Before‐after design, no control group |
| Kratter 1982 | Duplicate publication, less detailed than Kratter 1983 |
| Peck 2005 | Not diagnosed with ADHD |
| Zylowska 2008 | Before‐after design, no control group |
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.