Table 1 Descriptive information and risk factors affecting 200 studied nurses

Age (yrs): Mean±SD (range)

34.9±8.1 (22–57)

33.42±8 (22–56)

NS^$

Gender

    Male

n = 9

8/161

1/30

1.4

(0.18–32.99)

NS

    Female

n = 191

0.67

(0.03–5.64)

Marital status

    Married

n = 139

118 (85)

21 (15)

1.1

(0.5–2.5)

NS

    Not married

n = 61

51 (84)

10 (16)

Children

    Yes

n = 104

87 (84)

17 (16)

0.95

(0.42–2.15)

NS

    No

n = 96

81 (85)

15 (15)

Reference category

Department

    Medicine

n = 73

61 (64)

12 (16)

0.89

(0.38–2.11)

NS

    Surgery

n = 45

41 (91)

4 (9)

2.16

(0.67–7.77)

NS

    Paediatric

n = 42

36 (86)

6 (14)

1.13

(0.4–3.33)

NS

    Obstetrics &Gyn aecology

n = 40

31 (77)

9 (23)

0.55

(0.21–1.43)

NS

Working hours per day

    5–10 hours

n = 20

13 (65)

7 (35)

Reference category

    More than 10 hours

n = 180

156 (87)

24 (13)

3.5

(1.13–10.67)

0.01**

Duration of job (yr)

    Less than 1

n = 21

15 (71)

6 (29)

Reference category

    Between 1–5

n = 72

60 (83)

12 (17)

2

(0.56–7.06)

NS

    Between 6–10

n = 38

34 (90)

4 (10)

3.4

(0.7–17.3)

NS

    More than 10

n = 69

60 (87)

9 (13)

2.67

(0.71–10.01)

NS

Co–morbid illness

    Yes

n = 49

43 (87)

6 (13)

1.42

(0.51–4.16)

NS

    No

n = 151

126 (83)

25 (17)

Reference category

Weight

    Underweight

n = 67

50 (75)

17 (25)

0.45

(0.19–1.07)

0.05*

    Normal weight

n = 100

87 (87)

13 (13)

Reference category

-

    Overweight

n = 24

24 (100)

-

0.82

(0.77–0.88)

NS

    Obese

n = 9

8 (89)

1 (11)

1.5

(0.18–12.4)

NS

Smoking

     Yes

n = 3

2 (75)

1 (25)

1.9

(0.64–2)

NS

    No

n = 197

165 (84)

32 (16)

Reference category

Work-related factors

 Manual lifting of patients

    Yes

n = 177

152 (86)

25 (14)

2.15

(0.68–6.5)

NS

    No

n = 23

17 (73)

6 (27)

Reference category

 Not enough staff

    Yes

n = 112

101 (90)

11 (10)

2.7

(1.14–6.47)

0.01**

    No

n = 88

68 (77)

20 (23)

Reference category