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Table 2 Baseline data on clinical features of low back pain (LBP) and the outcome measures of effectiveness by study group

From: Effectiveness and cost-effectiveness of neuromuscular exercise and back care counseling in female healthcare workers with recurrent non-specific low back pain: a blinded four-arm randomized controlled trial

Characteristic

Combined (n = 53)

Exercise (n = 57)

Counseling (n = 55)

Control (n = 54)

Total (n = 219)

Missing

Intensity of LBP; VAS (0–100 mm): mean (sd)

39.9 (20.3)

37.8 (25.7)

32.9 (23.0)

34.5 (20.9)

36.2 (22.6)

1

Proportion with pain intensity of 40 mm or more in VAS: %

47.2

45.5

35.7

31.3

39.9

1

Proportion with daily pain: %

12.8

8.2

17.6

8.9

12.0

27

Duration of symptoms of LBP: %

 (a) < 3 months

64.1

69.1

72.7

51.9

64.5

2

 (b) 3–6 months

20.8

12.7

7.3

18.5

14.7

 (c) ≥7 months

15.1

18.2

20.0

29.6

20.7

Multisite (≥3) musculoskeletal pain with intensity ≥4 on NRS (0–10): %

42.3

29.1

25.5

26.4

30.7

4

Bodily pain interfering with work (SF 36) (score 0–100): mean (sd)

59.3 (17.3)

63.6 (19.8)

65.1 (21.1)

63.6 (17.5)

63.0 (19.0)

8

FABs related to work (score 0–48):a mean (sd)

11.2 (6.9)

11.6 (9.9)

11.0 (7.4)

9.9 (6.9)

10.9 (7.9)

9

FABs related to physical activity (score 0–30): mean (sd)

13.6 (6.6)

14.3 (6.5)

13.8 (6.0)

11.6 (6.0)

13.3 (6.3)

1

Quality of life (SF 36), SF-6D index (0.00–1.00): mean (sd)

0.71 (0.10)

0.74 (0.09)

0.75 (0.11)

0.73 (0.10)

0.74 (0.10)

9

Sickness absence days, previous 6 months: mean (range)

0.8 (0–11)

1.6 (0–40)

1.7 (0–19)

3.4 (0–70)

1.9 (0–70)

16

 % with no sickness absence days

79.2

80.0

70.2

81.4

77.6

16

Total healthcare costb (euros) in previous 6 months: mean (sd)

91 (237)

80 (162)

89 (173)

139 (354)

77 (242)

16

Total costsc (euros) in previous 6 months:mean (sd)

225 (513)

333 (1069)

351 (787)

691 (2582)

400 (1470)

16

  1. Abbreviations: VAS visual analog scale, NRS numeric rating scale, FABs Fear Avoidance Beliefs; aquestions 10, 15, and 16 excluded as non-relevant in the present study population; bvisits to a doctor, a nurse, public health nurse, physiotherapist, in-patient days, medication; ctotal healthcare costs and costs of sickness absences