Table 2 Linear regression analyses investigating short- and long-term effects of the intervention
From: Effectiveness of a web-based intervention for injured claimants: a randomized controlled trial
Outcome measure [range] | C/I | Baseline | 3 months | 6 months | 12 months | Short-term effect | Long-term effect | ||
|---|---|---|---|---|---|---|---|---|---|
(3 months) | (12 months) | ||||||||
M (SD) | M (SD) | M (SD) | M (SD) | β | P | β | P | ||
Empowerment [1-5] | C | 3.19 (0.63) | 3.31 (0.67) | 3.40 (0.57) | 3.37 (0.56) | -.012 | 0.03 | −0.10 | 0.10 |
I | 3.19 (0.71) | 3.15 (0.71) | 3.27 (0.71) | 3.24 (0.74) | |||||
Self-efficacy [0–10] | C | 7.48 (2.21) | 7.68 (1.86) | 7.82 (1.92) | 7.80 (1.89) | −0.02 | 0.64 | −0.06 | 0.27 |
I | 7.49 (2.10) | 7. 59 (2.40) | 7.57 (2.37) | 7.54 (2.32) | |||||
Procedural justice [1-5] | C | 3.60 (0.93) | 3.45 (0.95) | 3.47 (1.01) | 3.49 (0.88) | 0.01 | 0.99 | −0.02 | 0.70 |
I | 3.54 (1.05) | 3.41 (1.12) | 3.38 (1.07) | 3.41 (1.01) | |||||
Interactional justice [1-5]a | C | 4.70 (0.60) | 4.62 (0.72) | 4.70 (0.55) | 4.68 (0.55) | −0.05 | 0.43 | −0.05 | 0.43 |
I | 4.75 (0.57) | 4.57 (0.77) | 4.67 (0.62) | 4.64 (0.68) | |||||
Informational justice [1-5] | C | 4.27 (0.86) | 4.14 (0.93) | 4.13 (0.92) | 4.10 (0.85) | −0.06 | 0.27 | −0.05 | 0.41 |
I | 4.42 (0.87) | 4.14 (1.03) | 4.14 (0.99) | 4.13 (1.03) | |||||
Interactional justice [1-5]b | C | 3.34 (1.20) | 3.38 (1.33) | 3.42 (1.28) | 3.34 (1.29) | 0.02 | 0.72 | 0.08 | 0.16 |
I | 3.19 (1.12) | 3.30 (1.33) | 3.33 (1.36) | 3.40 (1.30) | |||||
Burden [1-10] | C | 5.89 (2.79) | 5.88 (2.60) | 5.57 (2.64) | 5.82 (2.61) | −0.05 | 0.40 | −0.01 | 0.87 |
I | 5.52 (2.56) | 5.39 (2.75) | 6.65 (2.83) | 5.57 (2.92) | |||||
Depression [1-5] | C | 1.65 (0.80) | 1.67 (0.77) | 1.56 (0.68) | 1.61 (0.75) | −0.01 | 0.81 | 0.02 | 0.68 |
I | 1.72 (0.86) | 1.73 (0.88) | 1.69 (0.82) | 1.69 (0.82) | |||||
Anxiety [1-5] | C | 1.52 (0.70) | 1.51 (0.63) | 1.18 (0.66) | 1.47 (0.68) | 0.03 | 0.37 | 0.02 | 0.56 |
I | 1.60 (0.81) | 1.64 (0.87) | 1.58 (0.79) | 1.58 (0.76) | |||||
Somatic complaints [1-5] | C | 1.79 (0.65) | 1.75 (0.66) | 1.67 (0.64) | 1.66 (0.67) | 0.03 | 0.40 | 0.06 | 0.21 |
I | 1.84 (0.75) | 1.84 (0.76) | 1.80 (0.75) | 1.78 (0.73) | |||||
EuroQol VAS [0–10] | C | 6.44 (1.93) | 6.66 (1.89) | 6.84 (2.07) | 6.92 (1.91) | −0.05 | 0.35 | −0.06 | 0.31 |
I | 6.11 (2.10) | 6.22 (2.14) | 6.36 (2.17) | 6.45 (2.28) | |||||
Work ability VAS [1-10] | C | 6.17 (2.36) | 6.39 (2.13) | 6.67 (2.16) | 6.61 (2.17) | −0.08 | 0.10 | −0.02 | 0.71 |
I | 5.68 (2.41) | 5.64 (2.57) | 5.90 (2.63) | 6.17 (2.46) | |||||
Claim knowledge [1-5] | C | 3.01 (0.93) | 3.27 (0.96) | 3.26 (1.05) | 3.30 (1.01) | −0.14 | 0.02 | −0.10 | 0.11 |
I | 3.08 (0.95) | 3.05 (0.95) | 3.03 (1.04) | 3.13 (1.06) | |||||