c) Married and separately living

-

-

d) Divorced

-

-

e) Widow/widower

-

-

8

Years of experience

a) 0 - 3

17

6

b) 3.1 - 6

23

6

2.81

NS

c) 6.1 - 9

14

6

d) Above 9

5

3

9

Number of working hours per day

a) 8

32

7

b) 10

19

7

2.71

NS

c) 12

8

7

d) Above 12

10

Number of night shifts per week

a) 2

36

4

b) 3

31

8

12.32

*S

c) 4

2

9

d) Above 4

-

-

11

Any previous history of illness

a) Yes

15

10

3.55

NS

b) No

44

11