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Table 5 Number (n) and percentage receiving disability benefit, association (odds ratio) with level of education among attendees and all invited. The Oslo Health Study 2000–2001.

From: The Oslo Health Study: The impact of self-selection in a large, population-based survey

Education *

Attendees

All invited

 

n

%

Odds ratio

(95% CI)

n

%

Odds ratio

(95% CI)

Men

        

Age 40+45

        

   Lower secondary

30

9.3

Ref.

 

143

14.4

Ref.

 

   Upper secondary

41

3.3

0.34

(0.21 – 0.55)

159

5.0

0.31

(0.25 – 0.40)

   College/University

15

1.2

0.12

(0.06 – 0.23)

58

2.0

0.12

(0.09 – 0.17)

Age 59–60

        

   Lower secondary

116

31.3

Ref.

 

318

38.9

Ref.

 

   Upper secondary

142

15.5

0.40

(0.30 – 0.53)

338

20.0

0.39

(0.33 – 0.47)

   College/University

36

4.8

0.11

(0.08 – 0.17)

83

6.5

0.11

(0.08 – 0.14)

Women

        

Age 40+45

        

   Lower secondary

38

10.1

Ref.

 

119

13.8

Ref.

 

   Upper secondary

77

5.0

0.47

(0.31 – 0.70)

199

6.7

0.45

(0.36 – 0.58)

   College/University

37

2.4

0.22

(0.14 – 0.36)

85

3.0

0.20

(0.15 – 0.26)

Age 59–60

        

   Lower secondary

170

35.0

Ref.

 

396

39.7

Ref.

 

   Upper secondary

224

19.9

0.46

(0.37 – 0.59)

449

23.7

0.47

(0.40 – 0.55)

   College/University

65

10.6

0.22

(0.16 – 0.30)

128

13.2

0.23

(0.18 – 0.28)

  1. * Testing of interaction between attendance and education in a logistic regression model including all men and women aged 40, 45, 59 and 60 years, and age and sex as covariates in addition to attendance and education, was not significant (p > 0.05).