Table 4 |
|||||
|
Stepwise multiple regression showing 15 predictors ranked in order of magnitude in predicting group membership (FM or RA/SLE) |
|||||
|
Predictors |
Step and number of variables included |
Multiple R |
Multiple R2 |
R2 change |
P value for predictor variable |
|
|
|||||
|
Mid-lower back |
1 |
0.540 |
0.291 |
0.291 |
0.00000 |
|
Tenderness to touch |
2 |
0.637 |
0.406 |
0.115 |
0.00000 |
|
Neck |
3 |
0.689 |
0.474 |
0.068 |
0.00000 |
|
Arms |
4 |
0.712 |
0.507 |
0.033 |
0.00007 |
|
Hands |
5 |
0.747 |
0.558 |
0.051 |
0.00000 |
|
Lateral lower back |
6 |
0.758 |
0.575 |
0.017 |
0.00168 |
|
Sitting for 45 minutes |
7 |
0.768 |
0.589 |
0.014 |
0.00367 |
|
Feeling overwhelmed |
8 |
0.775 |
0.601 |
0.012 |
0.00750 |
|
Depression |
9 |
0.784 |
0.615 |
0.014 |
0.00365 |
|
Sensitivity |
10 |
0.791 |
0.626 |
0.011 |
0.00855 |
|
Thighs |
11 |
0.797 |
0.635 |
0.009 |
0.01471 |
|
Feet |
12 |
0.804 |
0.647 |
0.012 |
0.00529 |
|
Cleaning floors |
13 |
0.806 |
0.649 |
0.003 |
0.16326 |
|
Anxiety |
14 |
0.807 |
0.652 |
0.002 |
0.19893 |
|
Memory |
15 |
0.809 |
0.654 |
0.002 |
0.21899 |
|
|
|||||
|
Note: This forward stepwise regression analysis used 15 predictors which combined to produce a multiple R = 0.809 (last row, column 2). This accounted for 65% of variance associated with group membership (column 3). FM, fibromyalgia; RA/SLE, combined rheumatoid arthritis and systemic lupus erythematosus group. |
|||||
|
Friend and Bennett Arthritis Research & Therapy 2011 13:R58 doi:10.1186/ar3311 |
|||||
