Table 5.
Multivariable linear regression analysis
| Associated variables | Brookea (N = 207) | Basic hand functionb (N = 199) | Heavy liftingb (N = 199) | Light or no liftingb (N = 208) | Gross hand functionb (N = 187) | Fine hand functionb (N = 189) |
|---|---|---|---|---|---|---|
| β (95 % CI) | β (95 % CI) | β (95 % CI) | β (95 % CI) | β (95 % CI) | β (95 % CI) | |
| Age | 0.07 (0.05; 0.10) | −0.47 (−0.82; −0.12) | – | −0.99 (−1.35; −0.62) | −0.36 (−0.57; −0.15) | – |
| Disease stage | 0.69 (0.54; 0.84) | −1.84 (−3.69; 0.02) | −10.77 (−12.19; −9.35) | −9.15 (−11.24; −7.06) | −2.69 (−3.82; −1.55) | −3.04 (−3.64; −2.44) |
| BMI | −0.03 (−0.05; −0.01) | – | – | – | – | – |
| Age_diag | −0.07 (−0.13; 0.00) | – | – | – | – | – |
| Scoliosis | 0.31 (0.12; 0.50) | −4.79 (−7.17; −2.42) | −4.78 (−7.07; −2.49) | −4.36 (−7.11; −1.61) | −2.24 (−3.72; −0.75) | −1.30 (−2.27; −0.34) |
| Corticosteroids | −0.26 (−0.40; −0.12) | – | – | 3.50 (1.50; 5.50) | 2.76 (1.52; 3.99) | 1.64 (0.82; 2.46) |
| Physical therapy | – | – | −2.11 (−3.66; −0.55) | – | – | – |
| Splints | 0.45 (0.05; 0.86) | – | – | −7.04 (−12.75; −1.33) | −5.63 (−8.59; −2.68) | −2.40 (−4.43; −0.37) |
| School/work | – | 7.34 (2.81; 11.86) | 4.78 (0.61; 8.95) | – | 4.04 (1.23; 6.85) | 2.16 (0.44; 3.89) |
| Elbow pain frequency | – | −0.71 (−1.48; 0.06) | – | – | – | – |
| Stiffness frequency | 0.01 (0.00; 0.02) | – | −0.08 (−0.16; −0.01) | −0.18 (−0.27; −0.10) | −0.09 (−0.14; −0.05) | – |
| Stiffness limitations | – | −0.07 (−0.11; −0.02) | – | – | – | −0.02 (−0.04; 0.00) |
| R 2 | 0.81 | 0.56 | 0.75 | 0.81 | 0.75 | 0.70 |
aA lower score indicates better arm function
bA lower score indicates worse arm function