Unadjusted and adjusted regression models examining the effects of interventions on change in beta coefficient for regional pain (a negative beta coefficient indicates a decrease in pain scores after the intervention (n = 182)).
| Trackball intervention | Armboard intervention | |||||
|---|---|---|---|---|---|---|
| Beta coefficient | 95% CI | p Value | Beta coefficient | 95% CI | p Value | |
| *Variables in model: trackball, armboard, pre-intervention mean neck/shoulders pain value, age, gender, composite psychological strain, iso-strain, current smoker. | ||||||
| †Variables in model: trackball, armboard, pre-intervention mean right upper extremity pain value, age, gender, composite psychological strain, iso-strain, educational level. | ||||||
| ‡Variables in model: trackball, armboard, pre-intervention mean left upper extremity pain value, age, gender, composite psychological strain, iso-strain, body mass index. | ||||||
| Neck/shoulder pain | ||||||
| Unadjusted model | −0.29 | −0.74–0.16 | 0.20 | −0.38 | −0.83–0.06 | 0.09 |
| Adjusted model * | −0.27 | −0.66–0.11 | 0.16 | −0.48 | −0.85–−0.10 | 0.01 |
| Right upper extremity pain | ||||||
| Unadjusted model | −0.26 | −0.74–0.22 | 0.29 | −0.73 | −1.21–−0.25 | 0.003 |
| Adjusted model† | −0.29 | −0.69–0.12 | 0.17 | −0.66 | −1.06–−0.25 | 0.002 |
| Left upper extremity pain | ||||||
| Unadjusted model | −0.23 | −0.64–0.17 | 0.25 | −0.28 | −0.68–0.13 | 0.18 |
| Adjusted model‡ | −0.35 | −0.69–−0.02 | 0.04 | −0.30 | −0.63–0.03 | 0.08 |