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.
| Studies Included | Randomization | Allocation Concealment | Blinding | Incomplete Outcome Data | Selective Reporting | Other Sources of Bias |
|---|---|---|---|---|---|---|
| Jinhua Hu 2010 (18) | Unclear | High risk | High risk | Low risk | Low risk | Unclear |
| Xianmin Wang 2010 (20) | Unclear | Unclear | Unclear | Low risk | Low risk | Unclear |
| Zhiyong Yang 2012 (19) | Unclear | Unclear | Unclear | Low risk | Low risk | Unclear |
| Lei Fan 2013 (11) | Unclear | Unclear | Unclear | Low risk | Low risk | Unclear |
