Table 1 Baseline values of outcome measures and potential prognostic variables
Physical training (PT) | Physical training with a cognitive behavioral component and workplace specific exercises (PTCBWE) | |||
|---|---|---|---|---|
Intervention (n = 53) | Control (n = 50) | Intervention (n = 76) | Control (n = 75) | |
Age (yr) (mean (SD)) | 46 (7.1) | 45 (8.4) | 45 (6.6) | 45 (7.1) |
Gender (male) (n (%)) | 49 (93) | 46 (96) | 69 (91) | 70 (93) |
Industry (agriculture) (n (%)) | 27 (51) | 27 (56) | 48 (63) | 49 (65) |
Location of complaints (low back pain) (n (%)) | 25 (47) | 21 (42) | 39 (51) | 34 (45) |
Expectation of participants on return to work (n (%)) | ||||
- a few days till one month | 3 (6) | 3 (6) | 16 (22) | 12 (16) |
- a couple of months | 22 (42) | 18 (38) | 17 (23) | 16 (22) |
- no idea | 25 (48) | 25 (52) | 35 (47) | 45 (62) |
- never | 2 (4) | 2 (4) | 6 (8) | 0 (0) |
Full disability at randomization (n (%)) | 13 (25) | 13 (26) | 23 (30) | 18 (24) |
History of complaints (yes) (n (%)) | 15 (28) | 34 (71)* | 41 (54) | 44 (59) |
Good general health (n (%)) | 25 (47) | 28 (58) | 51 (67) | 40 (53) |
Insured daily compensation (euros) (mean (SD)) | 66 (20) | 66 (34) | 74 (25) | 70 (23) |
Duration (weeks) of disability before randomization (median (IQR)) | 8 (6–13) | 9 (6–16) | 10 (5–14) | 8 (5–14) |
Pain severity (0–10)† (mean (SD)) | 5.9 (1.2) | 5.8 (1.9) | 5.9 (1.4) | 5.6 (1.7) |
Functional status (NPDI, 0–100)† (mean (SD)) | 37 (14) | 37 (14) | 38 (13) | 35 (14) |
Functional status (QBPDS, 0–100)† (mean (SD)) | 34 (17) | 36 (17) | 35 (16) | 35 (17) |