| Model I Empty model | Model II | Model III | Model IV |
---|---|---|---|---|
Fixed effects | Â | Â | Â | Â |
Individual-level variables | Â | Â | Â | Â |
Ethnicity | Â | Â | Â | Â |
   Swedish |  | 1 (reference) | 1 (reference) | 1 (reference) |
   Nordic countries (other than Sweden) |  | 1.41 (0.65-3.06) | 1.16 (0.51-2.63) | 1.04 (0.46-2.36) |
   Other European countries |  | 2.19 (1.13-4.24)* | 2.21 (1.10-4.44)* | 1.84 (0.86-3.94) |
   Asia |  | 1.82 (1.09-3.05)* | 2.03 (1.22-3.38)** | 1.50 (0.85-2.67) |
   South America |  | 1.70 (0.77-3.75) | 1.32 (0.58-2.97) | 1.06 (0.45-2.50) |
   Africa |  | 4.57 (2.43-8.60)*** | 4.51 (2.30-8.85)*** | 3.55 (1.77-7.10)** |
Gender | Â | Â | Â | Â |
   Girl |  |  | 1 (reference) | 1 (reference) |
   Boy |  |  | 1.09 (0.76-1.57) | 1.08 (0.76-1.54) |
Age | Â | Â | 0.78 (0.71-0.85)*** | 0.77 (0.71-0.85)*** |
Family structure | Â | Â | Â | Â |
   Living with both parents |  |  | 1 (reference) | 1 (reference) |
   Not living with both parents |  |  | 3.11 (2.12-4.56)*** | 2.92 (1.98-4.29)*** |
Neighbourhood-level variable | Â | Â | Â | Â |
Neighbourhood socioeconomic deprivation | Â | Â | Â | 1.29 (1.10-1.52)** |
Random effects | Â | Â | Â | Â |
Between neighbourhood variance (SE)1 | 0.088 (0.296) | 0.024 (0.154) | 0.007 (0.090) | 0.008 (0.091) |
ICC (%) | 2.6 | 0.7 | 0.2 | 0.2 |
Explained variance (%) | - | 73.1 | 92.3 | 92.3 |