Table 4. Canonical weights and loadings for the functions (WHOQOL score & medical factors).
| Variable groups | Variables | The 1st canonical function | The 2nd canonical function | ||||
|---|---|---|---|---|---|---|---|
| Coefficients | Correlation | Cross correlation | Coefficients | Correlation | Cross correlation | ||
| WHOQOL | DOM1 | 1.098 | 0.892 | 0.427 | −0.017 | 0.387 | 0.162 |
| DOM2 | −0.228 | 0.462 | 0.221 | 0.990 | 0.706 | 0.296 | |
| DOM3 | 0.386 | 0.632 | 0.302 | −0.865 | −0.145 | −0.061 | |
| DOM4 | −0.458 | 0.259 | 0.124 | 0.401 | 0.455 | 0.191 | |
| Medical factors | BMI | 0.104 | 0.241 | 0.115 | 0.317 | 0.451 | 0.189 |
| HD_DUR | −0.462 | −0.281 | −0.134 | −0.450 | −0.459 | −0.193 | |
| CCI | −0.352 | −0.374 | −0.179 | 0.154 | 0.258 | 0.108 | |
| Kt/V | −0.221 | −0.027 | −0.013 | −0.412 | −0.342 | −0.144 | |
| nPCR | 0.050 | 0.363 | 0.173 | 0.656 | 0.279 | 0.117 | |
| Hb | −0.149 | 0.105 | 0.050 | 0.394 | 0.198 | 0.083 | |
| Alb | 0.281 | 0.360 | 0.172 | −0.605 | −0.355 | −0.149 | |
| Tchol | 0.262 | 0.257 | 0.123 | −0.165 | −0.175 | −0.073 | |
| Ca | −0.391 | −0.223 | −0.107 | 0.419 | −0.018 | −0.008 | |
| P | 0.348 | 0.485 | 0.232 | −0.269 | 0.001 | 0.001 | |
| Ferritin | 0.128 | 0.111 | 0.053 | 0.231 | −0.051 | −0.021 | |
| iPTH | 0.563 | 0.460 | 0.220 | 0.068 | −0.155 | −0.065 | |
| 25(OH)D | 0.064 | 0.099 | 0.047 | −0.087 | 0.052 | 0.022 | |
25(OH)D = 25-hydroxyvitamin D, Alb = albumin, Ca = calcium, BMI = body mass index, CCI = Charlson comorbidity index, DOM1 = physical health domain of WHOQOL-BREF, DOM2 = psychosocial domain of WHOQOL-BREF, DOM3 = social relationships domain of WHOQOL-BREF, DOM4 = environmental domain of WHOQOL-BREF, Hb = hemoglobin, HD_DUR = duration of dialysis, iPTH = intact parathyroid hormone, Kt/V = clearance × time/volume, nPCR = normalized protein catabolic rate, P = phosphorus, WHOQOL-BREF = World Health Organization Quality of Life Scale-Abbreviated Version, Tchol = total cholesterol.