From: Catquest-9SF questionnaire: validation of Malay and Chinese-language versions using Rasch analysis
Item | Malay version | Chinese version | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Item calibrationa (SE) | Infit | Outfit | Item calibrationa (SE) | Infit | Outfit | |||||
MNSQ | ZSTD | MNSQ | ZSTD | MNSQ | ZSTD | MNSQ | ZSTD | |||
Assessment items: | ||||||||||
1. Do you experience that your present vision gives you difficulties in any way in your daily life? | −0.16 (0.11) | 0.97 | −0.3 | 0.99 | −0.1 | 0.19 (0.13) | 1.09 | 0.9 | 1.10 | 1.0 |
2. Are you satisfied or dissatisfied with your present vision? | −0.77 (0.11) | 1.26 | 2.6 | 1.51 | 4.1 | −2.05 (0.13) | 1.01 | 0.2 | 1.36 | 2.3 |
Do you have difficulty with the following activities because of your vision? | ||||||||||
1. Reading text in the newspaper | −0.81 (0.11) | 0.85 | −1.6 | 0.81 | −1.8 | −0.66 (0.13) | 1.12 | 1.2 | 1.09 | 0.9 |
2. Recognizing faces of people you meet | 0.83 (0.11) | 1.02 | 0.3 | 1.01 | 0.1 | 1.18 (0.14) | 1.13 | 1.3 | 1.12 | 1.1 |
3. Seeing prices of goods when shopping | −0.34 (0.11) | 1.09 | 0.9 | 1.04 | 0.5 | −0.67 (0.13) | 0.93 | −0.7 | 0.91 | −0.8 |
4. Seeing to walk on uneven ground | 0.34 (0.11) | 1.01 | 0.2 | 1.01 | 0.1 | 1.12 (0.14) | 1.06 | 0.6 | 0.97 | −0.2 |
5. Seeing to do needlework and handicraft | 0.03 (0.12) | 1.01 | 0.2 | 0.97 | −0.2 | 0.11 (0.14) | 0.97 | −0.2 | 0.93 | −0.6 |
6. Reading text on television | 0.07 (0.11) | 0.89 | −1.1 | 0.85 | −1.5 | −0.01 (0.13) | 0.98 | −0.1 | 0.97 | −0.3 |
7. Seeing to carry out a preferred hobby | 0.82 (0.11) | 0.86 | −1.5 | 0.80 | −2.0 | 0.79 (0.14) | 0.73 | −2.8 | 0.71 | −2.9 |