Table 2 Predictors of treatment response for the depended variables posttraumatic stress symptoms (PTSS) and depressive symptoms in the per protocol sample

Age (years)

− 0.07 ± 1.40

− 2.93, 2.78

t(30) = − 0.05

p = 0.960

− 0.39 ± 0.90

− 2.21, 1.45

t(33) = − 0.43

p = 0.672

Time in Germany (months)

0.20 ± 0.43

− 0.68, 1.07

t(29) = 0.46

p = 0.650

0.34 ± 0.28

− 0.22, 0.90

t(32) = 1.24

p = 0.225

Country of origin (Middle East vs. Africa)

− 8.22 ± 3.53

− 15.44, − 1.01

t(30) = − 2.33

p = 0.027

− 1.24 ± 2.51

− 6.33, 3.86

t(33) = − 0.49

p = 0.625

Contact to family (no/yes)

− 1.32 ± 3.61

− 8.71, 6.07

t(29) = − 0.37

p = 0.718

− 0.09 ± 2.36

− 4.72, 4.90

t(32) = 0.04

p = 0.970

Traumaload (number of events)

0.96 ± 0.77

− 0.64, 2.57

t(20) = 1.25

p = 0.224

− 0.15 ± 0.52

− 1.23, 0.93

t(20) = − 0.30

p = 0.771

Baseline severity posttraumatic stress symptoms

0.16 ± 0.23

− 0.31, 0.62

t(30) = 0.69

p = 0.497

0.12 ± 0.14

− 0.17, 0.41

t(32) = 0.85

p = 0.402

Baseline severity depressive symptoms

− 0.02 ± 0.37

− 0.77, 0.74

t(30) = − 0.04

p = 0.965

0.83 ± 0.19

0.45, 1.21

t(33) = 4.46

p < 0.001

Baseline severity dysfunctional cognitions

− 0.03 ± 0.29

− 0.62, 0.56

t(30) = − 0.10

p = 0.920

− 0.16 ± 0.18

− 0.52, 0.20

t(33) = − 0.90

p = 0.377