Table 2. A univariate meta-regression analysis of factors affecting between-study heterogeneity.
| Heterogeneity source | Coefficients | Std.Err | p-value |
|---|---|---|---|
| Sample size | -.0194809 | 0.0487589 | 0.689 |
| Publication year | -1.22279 | 4.987468 | 0.803 |
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.