Table 2.
Heterogeneity and Publication bias.
| Q | p-value | I2 (%) | ||
|---|---|---|---|---|
| Heterogeneity and inconsistency | ||||
| MDD | Complex I | 549.160 | 0.000 | 91% |
| Complex IV | 0.030 | 1.000 | 0% | |
| BD | Complex I | 137,410.000 | 0.000 | 100% |
| Complex IV | 873.150 | 0.000 | 95% | |
| SZ | Complex I | 2197.500 | 0.000 | 97% |
| Complex IV | 209.560 | 0.000 | 88% | |
| AD | Complex I | 64,812.000 | 0.000 | 100% |
| Complex IV | 4490.300 | 0.000 | 97% | |
| PD | Complex I | 437.650 | 0.000 | 80% |
| Complex IV | 3083.300 | 0.000 | 99% | |
| AGING | Complex I | 27.934 | 0.218 | 18% |
| Complex IV | 11.684 | 1.000 | 0% | |
| Egger's regression | ||||
| z-value | df | p-value | ||
| MDD | Complex I | −1.969 | 4 | 0.120 |
| Complex IV | 0.630 | 2 | 0.593 | |
| BD | Complex I | −2.191 | 17 | 0.043 |
| Complex IV | −0.042 | 8 | 0.968 | |
| SZ | Complex I | 0.135 | 13 | 0.895 |
| Complex IV | 1.035 | 8 | 0.331 | |
| AD | Complex I | −0.109 | 17 | 0.915 |
| Complex IV | −1.381 | 37 | 0.176 | |
| PD | Complex I | −2.127 | 30 | 0.042 |
| Complex IV | −0.176 | 26 | 0.862 | |
| AGING | Complex I | −1.025 | 9 | 0.332 |
| Complex IV | −2.820 | 13 | 0.014 | |
(Top) Heterogeneity and Inconsistency. Significant Q statistics indicate the existence of heterogeneity A I2-value of 0% indicates no observed inconsistency; whereas larger values shows increasing inconsistency. (Bottom) Egger's regression test for . The existence of potential publication bias is indicated by p-values <0.05
df degrees of freedom