Variables

Mean (SD)

1

2

3

4

5

6

7

8

9

10

11

12

1)

Gender

0.50

(0.50)

-

2)

Hearing problems at age 54

0.10

(0.30)

−0.079***

-

3)

Hearing impairment at age 7

0.11

(0.32)

−0.029

0.103***

-

4)

Parental social class at birth

3.35

(1.25)

−0.024

−0.033*

−0.029

-

5)

Childhood intelligence

104.3

(12.69)

0.067***

−0.054***

0.021

0.268***

-

6)

Educational qualifications

2.71

(1.45)

−0.086***

−0.020

−0.011

0.341***

0.482***

-