Table 3.
Model evaluating the contribution of epidural fat in explaining self-reported physical function for pain groups as compared with controls
| Short Form–36 PCS (N = 91) | Block Statistics |
Individual Predictor Statistics |
|||||
|---|---|---|---|---|---|---|---|
| R2 | AdjR2 | ΔR2 | P* | b | SE | P | |
| Block 1 | 0.07 | 0.04 | – | 0.109 | |||
| Age | –0.57 | 0.27 | 0.036 | ||||
| Male | 4.40 | 0.10 | 0.202 | ||||
| BMI | –0.76 | 0.34 | 0.029 | ||||
| Block 2 | 0.58 | 0.54 | 0.51 | <0.001 | |||
| EFD | –0.93 | 2.04 | 0.651 | ||||
| LBP | –60.76 | 12.31 | <0.001 | ||||
| LBP + leg pain | –51.71 | 13.05 | <0.001 | ||||
| Block 3 | 0.61 | 0.57 | 0.03 | 0.052 | |||
| LBP × EFD | 6.79 | 2.74 | 0.015 | ||||
| LBP + leg pain × EFD | 3.93 | 2.84 | 0.170 | ||||
Block 1: covariates; Block 2: Block 1 + EFD + pain groups; Block 3: Block 2 + interaction terms.
Adj = Adjusted; b = regression coefficient; EFD = epidural fat diameter; LBP = low back pain; PCS = physical component summary score.
*This P value is for the test in the change in R2, where the change in R2 represents the additional variance explained by a given block, above and beyond the prior block(s): .