Table 2.
Item-total correlations for the MDKT subscales among 127 nursing personnel in nursing homes and home-based care
| Componenta | Percentage correct | Item-total correlation | Item difficulty (Rasch analysis) |
|---|---|---|---|
| General test (items 1–14) | |||
| n = 127 | |||
| 1 | 79.5 | 0.14 | –2.23 |
| 2 | 48.0 | 0.07 | –0.10 |
| 3 | 55.9 | 0.30 | –0.57 |
| 4 | 16.5 | 0.10 | 2.35 |
| 5 | 52.0 | 0.42 | –0.50 |
| 6 | 91.3 | 0.38 | –4.06 |
| 7 | 85.0 | 0.08 | –3.42 |
| 8 | 55.1 | 0.15 | –0.40 |
| 9 | 88.2 | 0.17 | –3.42 |
| 10 | 81.1 | 0.21 | –2.60 |
| 11 | 80.3 | 0.29 | –2.45 |
| 12 | 78.7 | 0.33 | –2.28 |
| 13 | 64.6 | 0.27 | –1.25 |
| 14 | 79.5 | 0.20 | –2.50 |
| Insulin use (items 15–23) | |||
| n = 127 | |||
| 15 | 40.9 | 0.00 | 0.14 |
| 16 | 84.3 | 0.04 | –3.69 |
| 17 | 52.8 | 0.05 | –0.44 |
| 18 | 71.7 | 0.14 | –1.90 |
| 19 | 95.3 | 0.08 | –6.55 |
| 20 | 81.1 | 0.46 | –3.04 |
| 21 | 84.3 | 0.27 | –3.22 |
| 22 | 81.1 | 0.33 | –3.05 |
| 23 | 53.5 | 0.18 | –0.39 |
aThe discrimination coefficients were 0.66 for the diabetes general test and 0.71 for the insulin-use subscale