Table 3 Spanish 'TOlerability and quality Of Life' (TOOL) questionnaire construct validity: principal component analysis and component matrix
Component | Initial eigenvalues | Extraction sums of squared loadings | ||||
|---|---|---|---|---|---|---|
Total | Percentage of variance | Cumulative percentage | Total | Percentage of variance | Cumulative percentage | |
1 | 3.131 | 39.140 | 39.140 | 3.131 | 39.140 | 39.140 |
2 | 0.955 | 11.934 | 51.074 | |||
3 | 0.905 | 11.315 | 62.388 | |||
4 | 0.846 | 10.570 | 72.959 | |||
5 | 0.742 | 9.279 | 82.238 | |||
6 | 0.563 | 7.032 | 89.269 | |||
7 | 0.443 | 5.534 | 94.803 | |||
8 | 0.416 | 5.197 | 100.000 | |||
Component matrix: Spanish TOOL domains | ||||||
Component 1 | ||||||
Worry-upset | 0.747 | |||||
Function capabilities | 0.759 | |||||
Fatigue-weakness | 0.789 | |||||
Weight gain | 0.392 | |||||
Stiffness-tremor | 0.548 | |||||
Physical restlessness | 0.670 | |||||
Sexual dysfunction | 0.491 | |||||
Dizziness-nausea | 0.481 | |||||