Table 1 Baseline Demographics and Prognostic Indicators

Age

47.02 (10.589) (range 22-69)

47.48 (11.526) (range 18-64)

0.693*

Gender (% F)

51%

52%

0.909**

Age left school

   • <16 yrs

34% (n = 18)

35% (n = 17)

0.880**

   • ≥16 yrs

66% (n = 35)

65% (n = 31)

Duration (weeks)

3.47 (2.791)

3.94 (3.069)

0.523**

Chronicity (proportion of previous 12 m)

   • <50%

57%

52%

0.655**

   • ≥50%

13%

31%

0.032**

   • First episode

30%

17%

0.118**

Severity (/10)

7.38 (1.632)

7.10 (1.882)

0.538*

Disability (/24)

10.91 (5.289)

12.06 (4.782)

0.195*

Job satisfaction (enjoy job)

81%

60%

0.014**

Bothersomeness

   • LBP (/5)

3.83 (0.955)

3.79 (1.031)

0.896*

   • Leg pain (/5)

2.47 (1.475)

2.62 (1.071)

0.588*

   • Moderate-severe leg pain (3-5/5)

42% (n = 22)

52% (n = 25)

0.296**

Interference with work (1-4)

2.98 (0.990)

2.96 (1.071)

0.908*

Life impact (0-4)

0.36 (0.834)

0.52 (0.031)

0.415*

Cut down activities (/28 days)

8.13 (6.964)

11.29 (8.417)

0.060*

Cut down work (/28 days)

5.29 (6.141)

6.41 (7.305)

0.666*

Downheartedness (/5)

1.51 (1.250)

1.98 (1.407)

0.067*