From: The Swedish RAND-36: psychometric characteristics and reference data from the Mid-Swed Health Survey
Reliability | Range of item-scale correlations | |||
---|---|---|---|---|
Scale | ka | Cronbach’s alpha | Item convergent validityb | Item discriminant validityc |
Physical functioning | 10 | 0.94 | 0.63–0.85 | 0.22–0.65 |
Role-functioning/physical | 4 | 0.91 | 0.77–0.83 | 0.35–0.66 |
Pain | 2 | 0.88 | 0.81 | 0.35–0.65 |
General health | 5 | 0.82 | 0.50–0.75 | 0.29–0.66 |
Energy/fatigue | 4 | 0.85 | 0.62–0.76 | 0.31–0.65 |
Social functioning | 2 | 0.84 | 0.73 | 0.44–0.65 |
Role-functioning/emotional | 3 | 0.84 | 0.67–0.74 | 0.31–0.57 |
Emotional well-being | 5 | 0.84 | 0.62–0.70 | 0.21–0.68 |