Table 3.
Psychometric evaluation of the SCNS-P&C45-S domains
| Domains | Items | Mean | SD | Scale Mean if Item Deleted | Item-scale correlations | Cronbach’s Alpha if Item Deleted | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Own scale | Other Scales (Difference) | |||||||||||
| PEN | WSN | IN | ||||||||||
| Domain 1 Health Care Service Needs (HCN) | Item 7 | 1.86 | 1.287 | 16.39 | 0.84 | 0.51 | (0.33)† | 0.68 | (0.16)† | 0.74 | (0.10)† | 0.95 |
| Item 8 | 1.64 | 1.183 | 16.61 | 0.69 | 0.31 | (0.38)† | 0.57 | (0.12)† | 0.44 | (0.25)† | 0.95 | |
| Item 9 | 1.61 | 1.061 | 16.64 | 0.81 | 0.67 | (0.15)† | 0.81 | (0)†† | 0.71 | (− 0.10)†† | 0.95 | |
| Item 10 | 1.64 | 1.059 | 16.61 | 0.79 | 0.68 | (0.11)† | 0.83 | (− 0.14)†† | 0.81 | (− 0.02)†† | 0.95 | |
| Item 11 | 1.77 | 1.198 | 16.48 | 0.88 | 0.62 | (0.26)† | 0.76 | (0.12)† | 0.81 | (0.07)† | 0.94 | |
| Item 12 | 1.73 | 1.188 | 16.52 | 0.91 | 0.55 | (0.36)† | 0.78 | (0.13)† | 0.72 | (0.19)† | 0.94 | |
| Item 13 | 1.55 | 1.044 | 16.70 | 0.89 | 0.56 | (0.33)† | 0.81 | (0.07)† | 0.64 | (0.25)† | 0.94 | |
| Item 14 | 1.84 | 1.055 | 16.41 | 0.71 | 0.56 | (0.15)† | 0.65 | (0.06)† | 0.67 | (0.04)† | 0.95 | |
| Item 16 | 1.48 | 1.023 | 16.77 | 0.79 | 0.41 | (0.38)† | 0.73 | (0.73)† | 0.58 | (0.21)† | 0.95 | |
| Item 17 | 1.75 | 1.014 | 16.50 | 0.81 | 0.56 | (0.25)† | 0.68 | (0.13)† | 0.69 | (0.12)† | 0.95 | |
| Item 20 | 1.39 | 0.868 | 16.86 | 0.44 | 0.61 | (− 0.25)†† | 0.47 | (− 0.03)†† | 0.37 | (0.07)† | 0.96 | |
| Cronbach’s alpha 0.95 Internal homogeneity 0.64 | Probable Scaling Success 73% | Probable Scaling Failure 27% | ||||||||||
| Items | Mean | SD | Scale Mean if Item Deleted | Item-scale correlations | Cronbach’s Alpha if Item Deleted | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Own scale | Other scales (Difference) | |||||||||||
| WSN | IN | HCN | ||||||||||
| Domain 2 Psychological and Emotional Needs (PEN) | Item 31 | 2.00 | 1.121 | 19.20 | 0.73 | 0.72 | (0.08)† | 0.81 | (− 0.77)†† | 0.72 | (0.01)† | 0.91 |
| Item 32 | 1.41 | 0.693 | 19.80 | 0.64 | 0.46 | (0.18)† | 0.49 | (0.15)† | 0.51 | (0.13)† | 0.91 | |
| Item 33 | 1.75 | 1.081 | 19.45 | 0.58 | 0.58 | (0)†† | 0.73 | (− 0.15)†† | 0.69 | (− 0.11)†† | 0.91 | |
| Item 34 | 1.50 | 0.849 | 19.70 | 0.70 | 0.56 | (0.14)† | 0.43 | (0.27)† | 0.43 | (0.27)† | 0.91 | |
| Item 35 | 1.23 | 0.565 | 19.98 | 0.69 | 0.50 | (0.19)† | 0.55 | (0.14)† | 0.44 | (0.44)† | 0.91 | |
| Item 36 | 1.23 | 0.605 | 19.98 | 0.54 | 0.17 | (0.37)† | 0.20 | (0.34)a | 0.12 | (0.42)a | 0.91 | |
| Item 37 | 1.57 | 0.900 | 19.64 | 0.70 | 0.62 | (0.08)† | 0.51 | (0.19)† | 0.54 | (0.16)† | 0.91 | |
| Item 38 | 1.41 | 0.816 | 19.80 | 0.45 | 0.65 | (0.20)† | 0.43 | (0.02)† | 0.49 | (− 0.04)†† | 0.92 | |
| Item 39 | 1.59 | 0.948 | 19.61 | 0.69 | 0.53 | (0.16)† | 0.51 | (0.18)† | 0.39 | (0.30)† | 0.91 | |
| Item 40 | 1.41 | 0.726 | 19.80 | 0.75 | 0.63 | (0.12)† | 0.53 | (0.22)† | 0.52 | (0.23)† | 0.91 | |
| Item 41 | 1.95 | 1.099 | 19.25 | 0.69 | 0.65 | (0.04)† | 0.79 | (− 0.10)†† | 0.65 | (0.04)† | 0.91 | |
| Item 42 | 1.48 | 0.876 | 19.73 | 0.69 | 0.61 | (0.08)† | 0.55 | (0.14)† | 0.51 | (0.18)† | 0.91 | |
| Item 43 | 1.20 | 0.668 | 20.00 | 0.52 | 0.29 | (0.23)a | 0.13 | (0.39)a | 0.12 | (0.40)a | 0.91 | |
| Item 44 | 1.48 | 0.849 | 19.73 | 0.59 | 0.41 | (0.18)† | 0.26 | (0.33)† | 0.22 | (0.37)† | 0.91 | |
| Cronbach’s alpha 0.92 Internal homogeneity 0.45 | Probable Scaling Success 79% | Probable Scaling Failure† 21% | ||||||||||
| Items | Mean | SD | Scale Mean if Item Deleted | Item-scale correlations | Cronbach’s Alpha if Item Deleted | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Own scale | Other scales (Difference) | |||||||||||
| IN | HCN | PEN | ||||||||||
| Domain 3 Work and Social Needs (WSN) | Item 21 | 1.55 | 0.875 | 8.55 | 0.52 | 0.54 (− 0.02)†† | 0.56 (0.04)†† | 0.67 (− 0.15)†† | 0.77 | |||
| Item 22 | 1.52 | 0.849 | 8.57 | 0.39 | 0.39 (0)†† | 0.34 (0.05)† | 0.61 (− 0.22)†† | 0.79 | ||||
| Item 26 | 1.48 | 0.952 | 8.61 | 0.71 | 0.68 (0.03)† | 0.78 (− 0.07)†† | 0.47 (0.24)† | 0.73 | ||||
| Item 27 | 1.52 | 1.067 | 8.57 | 0.54 | 0.49 (0.05)† | 0.72 (− 0.18)†† | 0.37 (0.20)† | 0.77 | ||||
| Item 28 | 1.27 | 0.660 | 8.82 | 0.39 | 0.47 (− 0.08)†† | 0.57 (− 0.18)†† | 0.31 (0.08)† | 0.79 | ||||
| Item 29 | 1.45 | 0.730 | 8.64 | 0.65 | 0.53 (0.12)† | 0.50 (0.15)† | 0.66 (0.01)†† | 0.75 | ||||
| Item 30 | 1.30 | 0.632 | 8.80 | 0.55 | 0.47 (0.08)† | 0.45 (0.10)† | 0.50 (0.05)† | 0.77 | ||||
| Cronbach’s alpha 0.80 Internal homogeneity 0.36 | Probable Scaling Success 14% | Probable Scaling Failure† 86% | ||||||||||
| Items | Mean | SD | Scale Mean if Item Deleted | Item-scale correlations | Cronbach’s Alpha if Item Deleted | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Own scale | Other scales (Difference) | |||||||||||
| IN | HCN | PEN | ||||||||||
| Domain 4 Information Needs (IN) | Item 1 | 1.84 | 1.119 | 10.95 | 0.88 | 0.76 (0.12)† | 0.57 (0.31)† | 0.71 (0.17)† | 0.91 | |||
| Item 2 | 2.05 | 1.275 | 10.75 | 0.88 | 0.72 (0.16)† | 0.60 (0.28)† | 0.63 (0.25)† | 0.91 | ||||
| Item 4 | 1.82 | 1.147 | 10.98 | 0.76 | 0.71 (0.05)† | 0.51 (0.25)† | 0.61 (0.15)† | 0.92 | ||||
| Item 5 | 1.82 | 1.084 | 10.98 | 0.87 | 0.73 (0.14)† | 0.56 (0.31)† | 0.64 (0.23)† | 0.91 | ||||
| Item 6 | 1.89 | 1.125 | 10.91 | 0.82 | 0.71 (0.11)† | 0.57 (0.25)† | 0.63 (0.19)† | 0.91 | ||||
| Item 23 | 1.61 | 0.97 | 11.18 | 0.43 | 0.28 (0.15)† | 0.46 (− 0.03)b | 0.26 (0.17)† | 0.95 | ||||
| Cronbach’s alpha 0.93 Internal homogeneity 0.64 | Probable Scaling Success 86% | Probable Scaling Failure†14% | ||||||||||
†Probable Scaling Success = Item-own-scale correlation > item-other-scale correlation p < 0.05
††Probable Scaling Failure = Item-own-scale correlation ≤ item-other-scale-correlation p < 0.05
aProbable Scaling Success = Item-own-scale correlation > item-other-scale correlation p > 0.05
bProbable Scaling Failure = Item-own-scale correlation ≤ item-other-scale-correlation p > 0.05