Number of items | Items selected | Reliability | Concurrent validity with the SPD-10 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CRF1 | CRF2 | CRF3 | CRF4 | CRF5 | CRF6 | CRF7 | CRF8 | CRF9 | CRF10 | Cronbach alpha | Correlation of the factor scores | Correlation of the total scores | |
3 |  | √ |  |  |  | √ |  |  | √ |  | 0.648 | 0.892** | 0.851** |
4 |  | √ | √ |  |  | √ |  |  | √ |  | 0.721 | 0.923** | 0.886** |
5 |  | √ | √ |  |  | √ |  | √ | √ |  | 0.733 | 0.952** | 0.929** |
6 | √ | √ | √ |  |  | √ |  | √ | √ |  | 0.758 | 0.962** | 0.938** |
7 | √ | √ | √ | √ |  | √ |  | √ | √ |  | 0.778 | 0.980** | 0.957** |
8 | √ | √ | √ | √ | √ | √ |  | √ | √ |  | 0.797 | 0.990** | 0.971** |
9 | √ | √ | √ | √ | √ | √ |  | √ | √ | √ | 0.808 | 0.999** | 0.987** |
10 | √ | √ | √ | √ | √ | √ | √ | √ | √ | √ | 0.795 | 1.000** | 1.000** |