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Table 4 Summary of findings

From: Environmental exposures and their genetic or environmental contribution to depression and fatigue: a twin study in Sri Lanka

Sex

Risk

Depression: mediation by

Fatigue: mediation by

  

A

C

E

A

C

E

Men

Early school leaving

  

+

  

+

 

Standard of living

  

+

 

+

 
 

Life events

 

+

+*

 

+

+

 

Parental care

+

   

+

 

Women

Early school leaving

    

+

 
 

Standard of living

    

+

 
 

Life events

+

   

+

+

 

Parental care

 

+

  

+

 
  1. A: genetics. C: family environments (or family-wide confounds). E: unique environments (i.e., those specific to each person within a twin pair).
  2. *Temporal direction may run from depression to life events