Table 2 Results of psychometric and Rasch analyses for the domains of the ATAQ-IPF.
From: Development of the ATAQ-IPF: a tool to assess quality of life in IPF
Domain | Items (N) | Domain-Total Correlation (p value) | Internal Consistency Reliability* | Rasch Model Reliability |
|---|---|---|---|---|
Cough | 6 | 0.38 (0.0002) | 0.92 | 0.83 |
Dyspnea | 6 | 0.71 (<0.0001) | 0.87 | 0.83 |
Forethought | 5 | 0.67 (<0.0001) | 0.89 | 0.82 |
Sleep | 6 | 0.46 (<0.0001) | 0.67 | 0.71 |
Mortality | 6 | 0.42 (<0.0001) | 0.74 | 0.78 |
Exhaustion | 5 | 0.72 (<0.0001) | 0.79 | 0.8 |
Emotional Well-being | 7 | 0.68 (<0.0001) | 0.85 | 0.82 |
Social Participation | 5 | 0.65 (<0.0001) | 0.81 | 0.78 |
Finances | 6 | 0.49 (<0.0001) | 0.9 | 0.67 |
Independence | 5 | 0.72 (<0.0001) | 0.81 | 0.74 |
Sexual Health | 5 | 0.48 (<0.0001) | 0.81 | 0.74 |
Relationships | 6 | 0.6 (<0.0001) | 0.61 | 0.71 |
Therapies | 6 | 0.19 (0.07) | 0.74 | 0.51 |
Total | 74 | - | 0.94 | 0.93 |