Table 4 Estimated variances (and standard errors), percent explained variance and intra-cluster correlations for physical and mental component scores (number of patients = 6997; number of practices = 96)
From: Quality of life of Australian chronically-ill adults: patient and practice characteristics matter
Random parameters | Estimated variance | ||
|---|---|---|---|
| Â | Baseline model | Full model | % Explained variance |
Physical component scores | Â | Â | Â |
Level 2, Practice variance | 4.40 (0.92)‡ | 0.60 (0.25)* | 72.9 |
Level 1, Patient variance | 135.67 (2.31)‡ | 80.07 (1.36)‡ | 42.4 |
Intracluster correlation | 0.031 | 0.007 | Â |
Deviance | 54326.89 | 50565.05 | Â |
Mental component scores | Â | Â | Â |
Level 2, Practice variance | 1.32 (0.43)†| 0.19 (0.21) | 49.2 |
Level 1, Patient variance | 121.59 (2.07)‡ | 97.0 (1.65)‡ | 20.9 |
Intracluster correlation | 0.011 | 0.002 | Â |
Deviance | 53501.64 | 51877.94 | Â |