Table 3 Meta-regression analyses of potential source of heterogeneity
Heterogeneity factors | Coefficient | SE | t | P (Adjusted) | 95% CI | |
|---|---|---|---|---|---|---|
LL | UL | |||||
Year | 0.347 | 0.649 | 0.53 | 0.938 | −1.242 | 1.935 |
Sample Size | −0.024 | 0.033 | −0.72 | 0.853 | −0.104 | 0.056 |
Country | −0.253 | 3.054 | −0.08 | 1.000 | −7.725 | 7.219 |
Language | −3.798 | 2.978 | −1.28 | 0.530 | −11.084 | 3.488 |