Differences between studies by subgroup analysis
| Subgroups | Number of studies | SMD (95% CI) | I2(%) | p Value |
|---|---|---|---|---|
| Ethnicity | ||||
| European | 2 | 0.63 (0.19 to 1.06) | 58.0 | 0.005 |
| West Asian | 5 | 0.45 (0.08 to 0.81) | 47.4 | 0.016 |
| East Asian | 1 | 1.26 (0.85 to 1.66) | 0 | <0.001 |
| Age (years) | ||||
| <18 | 5 | 0.52 (0.15 to 0.89) | 58.8 | 0.006 |
| ≥18 | 3 | 0.77 (0.18 to 1.36) | 79.0 | 0.01 |