Table 2 Baseline and follow-up scores, score differences, effect sizes and standardized response mean of all assessments
Baseline (mean) | SD | Follow-up (mean) | SD | Difference (mean) | SD | ES | SRM | |
|---|---|---|---|---|---|---|---|---|
SF-36 | ||||||||
Physical functioning (PF) | 47.1 | 18.6 | 53.3 | 20.0 | 6.2 | 15.8 | 0.33 | 0.39 |
Role physical (RP) | 26.3 | 17.9 | 36.2 | 19.6 | 9.9 | 20.6 | 0.55 | 0.48 |
Bodily pain (BP) | 19.0 | 13.9 | 29.2 | 15.0 | 10.2 | 13.9 | 0.73 | 0.73 |
General health (GH) | 42.1 | 16.4 | 46.1 | 18.2 | 3.9 | 16.1 | 0.24 | 0.25 |
Vitality (VT) | 30.4 | 18.6 | 42.9 | 20.3 | 12.5 | 18.5 | 0.67 | 0.68 |
Social functioning (SF) | 41.4 | 27.9 | 52.4 | 27.1 | 11.1 | 26.2 | 0.40 | 0.42 |
Role emotional (RE) | 43.8 | 31.0 | 51.0 | 29.5 | 7.2 | 28.8 | 0.23 | 0.25 |
Mental health (MH) | 48.4 | 21.0 | 57.5 | 21.2 | 9.1 | 18.9 | 0.43 | 0.48 |
MPI | ||||||||
Pain severity (PS) | 24.3 | 15.1 | 34.1 | 18.7 | 9.7 | 16.7 | 0.64 | 0.58 |
Interference (INT) | 28.4 | 15.7 | 37.8 | 19.4 | 9.4 | 14.4 | 0.60 | 0.65 |
Negative mood (NM) | 41.4 | 22.4 | 52.5 | 24.0 | 11.1 | 24.7 | 0.50 | 0.45 |
Life control (LIF) | 51.4 | 21.0 | 57.1 | 20.9 | 5.7 | 23.0 | 0.27 | 0.25 |
Social and away from home activities (SOC) | 40.8 | 19.9 | 44.7 | 17.8 | 3.9 | 14.1 | 0.20 | 0.28 |
SCL-90-R | ||||||||
Somatization (SOM) | 64.7 | 16.2 | 69.7 | 17.5 | 5.0 | 12.0 | 0.31 | 0.41 |
Anxiety (ANX) | 73.7 | 22.8 | 77.3 | 22.0 | 3.6 | 14.0 | 0.16 | 0.25 |
Depression (DEP) | 61.6 | 22.5 | 69.9 | 22.2 | 8.3 | 15.1 | 0.37 | 0.55 |
Anger-hostility (AH) | 78.5 | 17.9 | 83.5 | 17.1 | 4.9 | 14.5 | 0.28 | 0.34 |
ODI total score | 55.5 | 12.4 | 58.5 | 13.6 | 3.0 | 9.9 | 0.25 | 0.31 |
Back Performance Scale (BPS) | 51.7 | 26.6 | 62.6 | 25.5 | 10.9 | 17.7 | 0.41 | 0.61 |
6 Minute Walking Distance (6MWD; m) | 403.6 | 155.2 | 444.4 | 155.1 | 40.8 | 99.2 | 0.26 | 0.41 |