Table 2 Stratified analysis of the prevalence of chronic and non-chronic low back pain

18 – 27

44.8 ± 9.2

13

3.0

1.6 – 5.1

49.7 ± 13.8

6

4.9

1.8 – 10.3

28 – 37

39.4 ± 10.0

90

20.9

17.1 – 25.0

43.9 ± 10.3

21

17.1

10.9 – 24.9

38 – 47

39.1 ± 10.8

141

32.7

28.3 – 37.4

44.7 ± 10.1

35

28.5

20.7 – 37.3

48 – 57

41.8 ± 10.2

129

29.9

25.6 – 34.5

45.4 ± 12.1

34

27.6

19.7 – 36.5

58 + 

38.8 ± 11.3

58

13.5

10.4 – 17.1

45.1 ± 12.6

27

22.0

14.9 – 30.3