Heterogeneity factors | Coefficient | SE | t | P (Adjusted) | 95% CI | |
---|---|---|---|---|---|---|
LL | UL | |||||
Year | −0.424 | 0.358 | −1.18 | 0.771 | −1.204 | 0.356 |
Sample Size | −0.003 | 0.025 | −0.12 | 1 | −0.058 | 0.052 |
Country | −0.461 | 0.315 | −1.47 | 0.598 | −1.147 | 0.224 |
Language | 1.857 | 1.721 | 1.08 | 0.827 | −1.895 | 5.608 |
Ethnicity | 0.159 | 0.752 | 0.21 | 1 | −1.48 | 1.8 |
Machine type | 0.433 | 0.74 | 0.59 | 0.988 | −1.18 | 2.047 |
b value | 0.038 | 0.332 | 0.11 | 1 | −0.686 | 0.761 |