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.
| Methods | Created to enable analysis of the results of two strata reported in the study |
| Participants | Same as Hsia 2004 |
| Interventions | Same as Hsia 2004 |
| Outcomes | Same as Hsia 2004 |
| Notes |
| Risk of bias | ||
|---|---|---|
| Bias | Authors’ judgement | Support for judgement |
| Blinding (performance bias and detection bias) All outcomes |
Low risk | |
| Incomplete outcome data (attrition bias) All outcomes |
High risk |
