Table 2 Comparison of occupational characteristics

Length of service (in yrs.)

3.09

2.24

10.04

9.07

<0.001^b

n

%

n

%

Educational level

<0.001^a

   Certificate

.

.

175

87.5

   Diploma

77

89.5

19

9.5

   Degree

9

10.5

6

3.0

Part-time job

.172^a

   Yes

6

7.0

25

12.4

   No

80

93.0

176

87.6

Hours at work

.908^a

    ≤ 40

38

44.7

90

45.5

    > 40

47

55.3

108

54.5

Shift work

<0.001^a

   Yes

21

24.7

127

63.8

   No

64

75.3

72

36.2

ER-ratio

    < 1

25

29.4

26

13.2

0.001^a

    > 1

60

70.6

171

86.8

Overcommitment

0.001

 Low (lower tertiles)

66

76.7

110

55.6

 High (upper tertile)

20

23.3

88

44.4