Table 4 Hierarchical multiple regression analyses predicting PTSD symptoms from perinatal variables (Model 1), birth-related (Model 2), social support (Model 3) and cognitive variables (Model 4)

Model 1

Model 2

Model 3

Model 4

R ²= .11, Δ R ²= .11***

R ²= .43, Δ R ²= .33***

R ²= .44, Δ R ²= .01

R ²= .68, Δ R ²= .23***

B

SE B

β

B

SEB

β

B

SE B

β

B

SE B

β