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. Author manuscript; available in PMC: 2012 Sep 1.
Published in final edited form as: J Psychiatr Res. 2011 Apr 5;45(9):1146–1152. doi: 10.1016/j.jpsychires.2011.03.004

Table 1.

Hierarchical regression models for parental loss/separation and depression history predicting average levels of pre-onset life stress by stressor type

Type of stress and predictor β Multiple
R 		R2 ΔR2 ΔF (dfs) p
Overall stress
      Step 1: Difficulty stress .072 .072 .005 .005 0.52 (1, 98) .474
      Step 2: Parental loss/separation −.218 .229 .053 .047 4.85 (1, 97) .030
      Step 3: Depression history −.346 .395 .156 .103 11.75 (1, 96) .001
      Step 4: Parental loss/separation × Depression history interaction .169 .401 .161 .005 0.59 (1, 95) .445
Interpersonal loss stress
      Step 1: Difficulty stress −.080 .080 .006 .006 0.63 (1, 98) .428
      Step 2: Parental loss/separation −.226 .240 .058 .051 5.28 (1, 97) .024
      Step 3: Depression history −.403 .444 .197 .140 16.69 (1, 96) .001
      Step 4: Parental loss/separation × Depression history interaction .318 .464 .216 .018 2.23 (1, 95) .139
Non-loss stress
      Step 1: Difficulty stress .142 .142 .020 .020 2.03 (1, 98) .157
      Step 2: Parental loss/separation −.040 .148 .022 .002 0.16 (1, 97) .690
      Step 3: Depression history −.097 .173 .030 .008 0.81 (1, 96) .371
      Step 4: Parental loss/separation × Depression history interaction .017 .174 .030 .000 0.01 (1, 95) .942