Table 2. Descriptive statistics, comparison with the original DAS-3 and test-retest intraclass correlation coefficients for C-DAS-3.
| Scale name | Number of items (N = 5961) | Mean ± SD (N = 5961) | Range (N = 5961) | Cronbach's alpha of C-DAS-3 (N = 5961) | Cronbach's alpha of DAS-3 (N = 1843) | Test-retest | ||
| Test (N = 48) | Retest (N = 48) | Intraclass Correlation (P-value) | ||||||
| Subscale 1 | 5 | 4.32±0.49 | 1.80∼5.00 | 0.740 | 0.67 | 4.43±0.45 | 4.37±0.37 | 0.740 (<0.0001) |
| Subscale 2 | 7 | 3.62±0.46 | 1.43∼5.00 | 0.706 | 0.80 | 2.88±0.44 | 2.68±0.35 | 0.657 (<0.0001) |
| Subscale 3 | 7 | 3.57±0.51 | 1.71∼5.00 | 0.820 | 0.72 | 2.93±0.54 | 2.89±0.47 | 0.749 (<0.0001) |
| Subscale 4 | 6 | 3.79±0.53 | 1.67∼5.00 | 0.848 | 0.65 | 3.30±0.52 | 3.19±0.59 | 0.865 (<0.0001) |
| Subscale 5 | 8 | 3.68±0.49 | 1.63∼5.00 | 0.654 | 0.76 | 3.80±0.47 | 3.75±0.43 | 0.654 (<0.0001) |
| Total scale | 33 | 3.76±0.30 | 2.45∼4.76 | 0.813 | 3.47±0.29 | 3.37±0.26 | 0.706 (<0.0001) | |
DAS-3: The third version of diabetes attitude scale.
Total scale: The average score of the five subscales.