Table 6.
Multiple regression analysis for identifying factors that explain PCs
| PC | Explanatory variables | B | β | P | Eliminated variables |
|---|---|---|---|---|---|
| PC1all | Sex (F:0, M:1) | −2.61 | −0.60 | 2.8E−06 | |
| Age | −0.45 | −0.28 | 2.1E−03 | ||
| Body fat percentage | −0.14 | −0.31 | 5.4E−04 | ||
| Iliospinale height | 0.13 | 0.35 | 1.9E−03 | ||
| Leg extension strength | −0.02 | −0.29 | 2.0E−02 | ||
| PC2all | Sex (F:0, M:1) | −3.20 | −0.90 | 3.7E−07 | Forearm circumference |
| Age | 0.35 | 0.27 | 7.7E−03 | Leg extension strength | |
| Grip strength | 0.11 | 0.58 | 5.9E−04 | Leg flexion strength | |
| PC3all | Forearm circumference | −0.19 | −0.27 | 1.8E−02 | Weight |
| Minimum forearm circumference | |||||
| Calf circumference | |||||
| Ankle circumference |
B partial regression coefficient, β standardized partial regression coefficient
P values less than 0.05 are shown in italics