Table 3 Exploratory factor analysis and internal consistency conducted separately for the 7 observers NYHA classification (target items) and combined with the 4 anchor items
Item | Eigenvalue1 | Eigenvalue2 | CFI1 | Alpha Cronbach |
|---|---|---|---|---|
Observer 1 | 3.261 | 1.856 | 0.687 | 0.799 |
Observer 2 | 3.383 | 0.929 | 0.988 | 0.778 |
Observer 3 | --- | --- | --- | --- |
Observer 4 | 3.754 | 0.803 | 0.992 | 0.790 |
Observer 5 | 3.972 | 0.864 | 0.987 | 0.839 |
Observer 6 | 3.056 | 1.406 | 0.934 | 0.607 |
Observer 7 | 3.363 | 1.178 | 0.984 | 0.732 |
Observer 8 | 3.368 | 0.863 | 1.000 | 0.791 |