Table 3 Rasch validation of the Chinese Catquest-9SF
From: The Chinese Catquest-9SF: validation and application in community screenings
Item | Score (mean ± SD) | Response category “cannot decide” rate | Item difficulty (logit) | Infit MNSQ | Outfit MNSQ | Cronbach’s α after removing the item |
|---|---|---|---|---|---|---|
Q1 | 2.89 ± 0.78 | 0.96% | 0.53 | 0.70 | 0.74 | 0.832 |
Q2 | 2.77 ± 0.85 | 1.92% | 0.89 | 0.78 | 0.79 | 0.839 |
Q3 | 2.86 ± 0.97 | 0 | 0.56 | 1.14 | 1.09 | 0.839 |
Q4 | 3.36 ± 0.81 | 0 | −0.82 | 1.25 | 1.11 | 0.843 |
Q5 | 2.78 ± 0.99 | 0 | 0.78 | 1.07 | 0.72 | 0.826 |
Q6 | 3.52 ± 0.68 | 0.96% | −1.27 | 0.93 | 0.90 | 0.834 |
Q7 | 3.25 ± 0.82 | 0 | −0.43 | 0.91 | 0.82 | 0.832 |
Q8 | 2.84 ± 1.10 | 6.73% | 1.01 | 0.82 | 0.68 | 0.851 |
Q9 | 3.80 ± 0.83 | 18.27% | −1.26 | 1.10 | 1.01 | 0.847 |