Table 3.
Reliability of the SRI
| Scale | Item | Minimum score, n (%) | Maximum score, n (%) | Cronbach’s α |
|---|---|---|---|---|
| SRI-RC | 8 | 0 | 0 | 0.77 |
| SRI-PF | 6 | 1 (0.62) | 0 | 0.85 |
| SRI-AS | 7 | 3 (1.86) | 0 | 0.68 |
| SRI-SR | 6 | 0 | 8 (4.97) | 0.81 |
| SRI-AX | 5 | 0 | 1 (0.62) | 0.87 |
| SRI-WB | 9 | 0 | 0 | 0.89 |
| SRI-SF | 8 | 0 | 2 (1.24) | 0.87 |
| SRI-SS | 7 domains | 0 | 0 | 0.94 |
Abbreviations: SRI, Severe Respiratory Insufficiency Questionnaire; RC, respiratory complaints; PF, physical functioning; AS, attendant symptoms and sleep; SR, social relationships; AX, anxiety; WB, psychological well-being; SF, social functioning; SS, summary scale.