Table 2.
Results of Egger’s test for small study effects and meta-regressions
| Test | Dataset | Outcome | Predictor | Comparison | Mean difference (95% CI) | Comparison P value | Global P value |
|---|---|---|---|---|---|---|---|
| Egger | Age | Prevalence of depressive symptoms | 0.635 | ||||
| Meta-regression | Age | Prevalence of depressive symptoms | Age | -0.003 (-0.128, 0.007) | 0.592 | ||
| Egger | Age | Age | 0.001 | ||||
| Egger | Gender | Prevalence of depressive symptoms | 0.930 | ||||
| Meta-regression | Gender | Prevalence of depressive symptoms | Proportion Male | 0.410 (-0.034, 0.854) | 0.069 | ||
| Egger | Gender | Gender | 0.224 | ||||
| Egger | Region | Prevalence of depressive symptoms | 0.041 | ||||
| Meta-regression | Region | Prevalence of depressive symptoms | Region | Europe vs Asia–Pacific | 0.037 (-0.115, 0.188) | 0.629 | 0.002 |
| Middle East / Africa vs Asia–Pacific | 0.364 (0.162, 0.566) | 0.001 | |||||
| North America vs Asia–Pacific | -0.033 (-0.220, 0.154) | 0.722 | |||||
| Egger | Before versus after stoma surgery | Odds of depressive symptoms | 0.229 | ||||
| Egger | Other: Stoma versus No stoma | Odds of depressive symptoms | 0.352 | ||||
| Egger | HADS: Stoma versus No stoma | Mean difference of depressive symptoms | 0.461 | ||||
| Egger | Colostomy versus Ileostomy | Mean difference of depressive symptoms | Did not converge |