Table 3 Statistics of tests for the mediation of a mediating variable (grey matter volume) in the relationship between an independent variable (sleep disturbance) and a dependent variable (depressive symptom).
From: Sleep disturbance-related depressive symptom and brain volume reduction in shift-working nurses
Brain region | Sobel test | Bootstrap approach | |||||||
|---|---|---|---|---|---|---|---|---|---|
Indirect effect | Total effect | Direct effect | Indirect effect | ||||||
Effect size | z value | p value | Effect size | p value | Effect size | p value | Effect size | p value | |
Left PostCG | 0.6366 | 2.0268 | 0.0427* | 1.6077 | 0.0012* | 0.9711 | 0.0372* | 0.6366 | 0.0148* |
Left STG | 0.8731 | 2.5191 | 0.0118* | 1.6077 | 0.0020* | 0.7347 | 0.1150 | 0.8731 | 0.0066* |
