Table 3.
Results of subgroup analyses
| # of studies in each subgroup | Hedges g Effect size (CI) | I2 | Test of subgroup differences | ||
|---|---|---|---|---|---|
| Chi-squared (df) | p | ||||
| Adjusted analyses | |||||
| Adjusted for covariates | 30 | −0.50 (−0.71, −0.29) | 95% | 0.00 (1) | 0.98 |
| Did not adjust for covariates | 2 | −0.51 (−1.06, 0.05) | 92% | ||
| TL assay | |||||
| FISH | 3 | −0.71 (−1.15, −0.27) | 47% | 0.91 (2) | 0.63 |
| PCR or Q-PCR | 22 | −0.46 (−0.71, −0.22) | 96% | ||
| Southern Blot | 7 | −0.52 (−0.87, −0.16) | 86% | ||
| Psychiatric disorder | |||||
| Depressive disorders | 11 | −0.55 (−0.92, 0.18) | 96% | 5.48 (4) | 0.24 |
| PTSD | 5 | −1.27 (−2.12, −0.43) | 94% | ||
| Psychotic disorders | 6 | −0.23 (−0.68, 0.21) | 91% | ||
| Anxiety disorders | 3 | −0.53 (−1.05, −0.01) | 97% | ||
| Bipolar disorders | 7 | −0.26 (−0.75, 0.23) | 91% | ||
Note: I2 is the proportion of observed variance that reflects real differences in the effect size for each subgroup.