Study | | SMD | [95% Conf. Interval] | % Weight |
|---|
Gallagher (2016) [33] | |-2.2e+ 03 | −4.7e+ 03 | 310.072 | 16.28 |
Shen (2011) [18] | |-287.300 | −439.475 | − 135.125 | 28.23 |
Gums (1999) [10] | | − 3.1e+ 03 | -3.4e+ 03 | −2.7e+ 03 | 27.83 |
Carter (1997) [8] | |-420.000 | − 868.487 | 28.487 | 27.66 |
D + L pooled WMD | |-1.4e+ 03 | −3.0e+ 03 | 155.203 | 100.00 |
- Heterogeneity chi-squared = 175.82 (d.f. = 3) p = 0.000.
- I-squared (variation in WMD attributable to heterogeneity) =98.3%.
- Estimate of between-study variance Tau-squared = 2.2e+ 06.
- Test of WMD = 0: z = 1.77 p = 0.078.
- 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.
