Table 3 Cronbach’s alpha coefficient, convergent and discriminant validity for the KIDSCREEN-27 and score domains for the Iranian school children
| Â | Convergent validitya | Discriminant validityb | ||||||
|---|---|---|---|---|---|---|---|---|
Scale | No. items | n | mean±SD | α | Range of correlation | Scaling success (percent) | Range of correlation | Scaling success (percent) |
Child self-report | ||||||||
Physical well-being | 5 | 1083 | 51.65±11.32 | 0.79 | 0.62-0.76 | 5/5(100) | 0.25-0.48 | 20/20(100) |
Psychological well-being | 7 | 1083 | 44.76±10.90 | 0.85 | 0.64-0.74 | 7/7(100) | 0.16-0.57 | 28/28(100) |
Autonomy and parent relation | 7 | 1083 | 48.61±10.60 | 0.83 | 0.64-0.69 | 7/7(100) | 0.27-0.51 | 28/28(100) |
Social support and peers | 4 | 1083 | 44.66±9.40 | 0.75 | 0.73-0.76 | 4/4(100) | 0.23-0.43 | 16/16(100) |
School environment | 4 | 1083 | 51.32±9.94 | 0.73 | 0.63-0.77 | 4/4(100) | 0.21-0.47 | 16/16(100) |
Parent proxy-report | ||||||||
Physical well-being | 5 | 1070 | 50.36±10.94 | 0.81 | 0.63-0.80 | 5/5(100) | 0.24-0.49 | 20/20(100) |
Psychological well-being | 7 | 1070 | 44.05±12.22 | 0.83 | 0.65-0.74 | 7/7(100) | 0.14-0.57 | 28/28(100) |
Autonomy and parent relation | 7 | 1070 | 49.25±11.78 | 0.81 | 0.59-0.69 | 7/7(100) | 0.19-0.51 | 28/28(100) |
Social support and peers | 4 | 1070 | 45.67±10.93 | 0.77 | 0.73-0.82 | 4/4(100) | 0.23-0.45 | 16/16(100) |
School environment | 4 | 1070 | 50.49±10.91 | 0.75 | 0.66-0.81 | 4/4(100) | 0.22-0.47 | 16/16(100) |