Table 2 Bivariate Pearson correlations between all variables in the studies; women above the diagonal and men below

Parental social class (SC)

1

−0.11^a

−0.12^b

0.28^b

0.14^b

0.19^b

0.05

0.01

0.02

−0.00

0.01

Unemployment in family (UE)

−0.04

1

0.15^b

−0.24^b

−0.04

−0.12^a

0.08

0.10^a

0.09

0.04

0.05

Parental mental health or alcohol problems (MH)

−0.12^b

0.05

1

−0.14^b

−0.05

−0.10^a

0.08

0.09

0.06

0.06

0.10^a

Parental interest in offspring’s studies (PI) according to teacher

0.21^b

−0.15^a

−0.14^b

1

0.04

0.45^b

−0.10^a

0.01

−0.05

0.03

−0.03

Help with homework assignments (HA) according to student

0.18^b

−0.05

−0.04

0.05

1

−0.02

−0.12^a

−0.04

0.01

−0.13^b

−0.04

Mean grade on leaving compulsory school at 16 (GR)

0.25^b

−0.11^a

−0.14^b

0.42^b

0.08

1

−0.14^b

−0.02

−0.02

−0.10^a

−0.07

Internalised mental symptoms at 16 (16)

−0.02

0.16^b

0.14^b

−0.10^a

−0.08

−0.12^b

1

0.30^b

0.34^b

0.26^b

0.17^b

Internalised mental symptoms at 18 (18)

0.10^a

0.06

0.03

0.04

−0.04

−0.03

0.32^b

1

0.36^b

0.25^b

0.16^b

Internalised mental symptoms at 21 (21)

0.06

0.13^b

−0.03

−0.08

−0.01

−0.15

0.24^b

0.35^b

1

0.41^b

0.34^b

Internalised mental symptoms at 30 (30)

0.02

0.08

−0.00

−0.04

0.01

−0.03

0.18^b

0.27^b

0.27^b

1

0.39^b

Internalised mental symptoms at 43 (43)

−0.05

0/09

0.03

−0.12^b

−0.05

−0.13^b

0.18^b

0.23^b

0.26^b

0.39^b

1