| Study | 1. Randomization | 2. Deviations from intervention | 3. Missing outcome data | 4. Measurement of the outcome | 5. Selection of the reported results | Overall risk of bias |
| Walsh 2020 | Low | Low | Low | Low | Low | Low |
| Frenck 2021 | Low | Low | Low | Low | Low | Low |
| Thomas 2021 | Low | Low | Low | Low | Low | Low |
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.