Study | | SMD | [95% Conf. Interval] | % Weight |
|---|
Shen (2011) [18] | | -1.600 | −2.871 | −0.329 | 60.15 |
Cies (2013) [21] | | -3.000 | −6.131 | 0.131 | 9.92 |
Dager (2014) | | -2.700 | −4.502 | −0.898 | 29.93 |
I-V pooled WMD | | -2.068 | −3.054 | −1.082 | 100.00 |
- Heterogeneity chi-squared = 1.33 (d.f. = 2) p = 0.513.
- I-squared (variation in WMD attributable to heterogeneity) = 0.0%.
- Test of WMD = 0: z = 4.11 p = 0.000.
- The significance level of the combined effect quantity test: 0.05.
- The significance level of the heterogeneity test: 0.1.
- Heterogeneity test: p > 0.1, no heterogeneity was considered; p < 0.1, heterogeneity was considered.
