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Table 1 Descriptive statistics for study variables at baseline

From: Association between midlife health behaviours and transitions out of employment from midlife to early old age: Whitehall II cohort study

 

Remained in full-time employment (n = 1422)

Transition out of work (n = 6282)

p a

Total (n = 7704)

Transition out on health grounds (n = 376)

Age at baseline (M, SD)

52.9 (7.0)

59.5 (8.6)

<0.001

58.3 (8.7)

60.3 (8.7)

Male (%)

75.1

68.3

<0.001

70.0

55.1

Socio-economic status (%)

 High

30.9

32.2

 

32.0

20.7

 Medium

51.1

49.7

 

50.0

47.9

 Low

18.1

18.1

0.52

18.1

32.5

Chronic disease (%)

10.8

17.2

<0.001

16.0

37.8

Smoking history (%)

 Never smoker

46.9

46.9

 

46.9

41.8

 Ex-smoker

31.7

34.6

 

34.1

30.6

 Current/intermittent

21.4

18.5

0.20

19.1

27.7

Heavy alcohol use (%)

 Never

75.4

76.4

 

75.4

79.5

 One observation

9.9

10.6

 

10.6

6.9

 Two/three observations

14.8

17.0

0.003

17.0

13.6

Problem drinkerc (%)

11.7

9.8

0.04

10.1

14.9

Low physical activity (%)

 Never

16.2

19.1

 

18.6

33.5

 One observation

27.9

29.6

 

29.3

30.1

 Two/three observations

55.8

51.3

0.001

52.1

36.4

Poor diet (%)

 Never

56.5

63.1

 

61.9

58.0

 One observation

17.3

16.6

 

16.7

16.2

 Two/three observations

26.2

20.3

<0.001

21.4

25.8

Physical health statusb (M, SD)

51.6 (7.0)

48.6 (9.5)

<0.001

49.1 (0.2)

40.0 (12.4)

Mental health statusb (M, SD)

51.5 (9.0)

52.2 (9.2)

0.02

52.1 (9.2)

47.2 (12.1)

  1. Note
  2. ap value for linear trend
  3. bMean value across follow-up
  4. cProblem drinking data available in 1991/93 for a subsample of 7747 participants