Table 6 Individual factors associated with LBP disability among Botswana school teachers

Gender

<0.001

Male

27.7

14.5

23.3

Female

72.3

85.5

76.7

Age

<0.001

≤30

23.5

13.3

20.2

31-40

38.4

35.3

37.4

41-50

29.1

40.1

32.7

>50

9.0

11.3

9.7

Body mass index

<0.001

<18.5

5.6

4.1

5.1

18-24.9

46.3

30.3

41.1

25-29.9

27.2

33.0

29.1

≥30

21.0

32.6

24.7

Marital status

0.337

Single

52.7

47.9

51.1

Married

41.7

45.1

42.8

Separated/divorced/widowed

5.6

6.9

6.0

Educational level

<0.001

Certificate

3.7

7.6

5.0

Diploma

55.5

64.0

58.3

Bachelors’ degree

40.8

28.4

36.7

Number of children less than 6 years

1.000

1

72.3

71.8

72.2

≥2

27.7

28.2

27.8

Previous injury

<0.001

No

88.3

74.4

83.7

Yes

11.7

25.6

16.3

Tobacco smoking

0.022

Never smoked

91.0

95.6

92.5

Ex-smokers

6.2

2.5

5.0

Current Smokers

2.8

1.9

2.5

Hours of physical exercise per week (h)

0.700

≤5

88.8

90.1

89.2

>5

11.2

9.9

10.8

School level

<0.001

Primary school

55.0

69.7

59.9

Junior secondary

33.2

25.2

30.6

Senior secondary

11.7

5.0

9.5

Length of employment (years)

0.001

≤10

50.9

38.5

46.8

11-20

32.0

37.2

33.7

21-30

15.3

20.2

16.9

>30

1.9

4.1

2.6

Working hours per week (hours)

1.000

40

85.0

85.2

85.1

>40

15.0

14.8

14.9

Number of children taught

0.060

≤25

12.8

8.2

11.3

26-30

15.5

14.8

15.2

31-35

28.3

30.6

29.0

36-40

32.5

38.5

34.4

>40

11.0

7.9

10.0

Extracurricular activities

0.309

No

35.1

33.9

33.9

Yes

64.9

68.5

66.1