Table 2.
Inter-item internal consistency and reproducibility of the Cardiff Wound Impact Schedule (CWIS) domains.
| CWIS Domains | Number of Items 1 | Range of Correlations 2 | Average Inter-Item Correlation | Cronbach’s Alpha | Reproducibility ICC (95%CI) |
|---|---|---|---|---|---|
| Social life 3 | 14 | −0.086–0.533 | 0.264 | 0.715 | 0.80 (0.72–0.85) |
| Well-being | 7 | 0.019–0.565 | 0.278 | 0.729 5 | 0.63 (0.51–0.73) |
| Physical symptoms and everyday living 4 | 24 | 0.040–0.767 | 0.247 | 0.797 6 | 0.84 (0.79–0.88) |
| Self-reported HRQoL | 1 | - | - | - | 0.87 (0.82–0.91) |
| Satisfaction with HRQoL | 1 | - | - | 0.88 (0.83–0.91) |
1 Number of items per domain. 2 Inter-item Pearson’s correlations. 3,4 Experience and stress item correlations are summated. 5 Improved from 0.729 to 0.743 if the third item for this subscale is deleted. 6 Improved from 0.797 to 0.800 if the eight item for this subscale is deleted. HRQoL, health-related quality of life; ICC, intraclass correlation coefficient; CI, confidence interval.