. Author manuscript; available in PMC: 2014 Dec 1.

Published in final edited form as: Psychol Med. 2013 Feb 18;43(12):10.1017/S0033291713000147. doi: 10.1017/S0033291713000147

Table 3.

Hierarchical multiple regression using exposure to trauma and severity of overall chronic stressors to predict severity of depressive symptoms across 24 months of follow-up

Block/predictor variables	R² total	R² change	F total (df)	Final β
Block 1	0.109	0.109	15.828 (1,129)^**
Gender				–
Lithium somatotherapy code				−0.331^**
Block 2	0.184	0.075	5.819 (2,127)^*
Trauma				0.124
Overall chronic stressors				−0.240^*
Block 3	0.185	0.001	0.158 (1,126)
Trauma × overall chronic stressors				−0.032

df, Degrees of freedom.

Statistically significant at p<0.01.

^**

Statistically significant at p<0.001.