Table 4 Comparison of changes in low back pain disability scores and selected psychosocial outcome variables between participants in GAG and GAMWG at weeks 4, 8 and 12 of the study
Variable | Time Frame | GAMWG (n = 25) Median (IQR) | GAG (n = 26) Median (IQR) | U-value | r | P-value |
|---|---|---|---|---|---|---|
LBP disability | Weeks 0–4 | −2.0 (1.5) | −2.0 (1.0) | 284.0 | 0.01 | 0.42 |
Weeks 4–8 | −2.0 (2.5) | 0.01 (2.0) | 157.5 | 0.20 | 0.00* | |
Weeks 8–12 | − 2.0 (1.5) | −1.50 (1.0) | 315.0 | 0.001 | 0.85 | |
Pain self-efficacy | Weeks 0–4 | 3.0 (5.0) | 1.0 (2.0) | 203.0 | 0.1 | 0.02* |
Weeks 4–8 | 2.0 (2.0) | 1.50 (1.5) | 252.5 | 0.04 | 0.16 | |
Weeks 8–12 | 6.0 (5.0) | 4.0 (2.3) | 237.0 | 0.05 | 0.10 | |
Fear avoidance beliefs | Weeks 0–4 | −2.0 (5.0) | 0.01 (2.0) | 210.0 | 0.10 | 0.02* |
Weeks 4–8 | −9.0 (4.0) | −7.0 (5.0) | 251.0 | 0.04 | 0.16 | |
Weeks 8–12 | −5.0 (4.0) | −5.50 (5.3) | 310.0 | 0.02 | 0.78 | |
Back pain beliefs | Weeks 0–4 | 2.0 (1.0) | 1.0 (3.0) | 283.0 | 0.01 | 0.42 |
|  | Weeks 4–8 | 2.0 (3.0) | 1.0 (3.3) | 246.5 | 0.04 | 0.13 |
Weeks 8–12 | 3.0 (2.0) | 3.0 (2.0) | 299.0 | 0.005 | 0.62 |