Table 3 Descriptive statistics: mean of control variables
| Â | Â | Intervention schools | Control schools |
|---|---|---|---|
(n = 172) | (n = 101) | ||
Boy | =1 if pupil is a boy | 0.47 | 0.50 |
Rental | =1 if pupils lives in rental apartment, and 0 if in owned house or apartment | 0.17*** | 0.29 |
Swedish | =1 if pupil was born in Sweden with at least 1 Swedish parent | 0.96** | 0.92 |
Nuclear | =1 if pupil lives with both biological parents | 0.76 | 0.73 |
Shared | =1 if lives every other week with mother/father | 0.13** | 0.07 |
Single parent | =1 if only lives with one parent | 0.11** | 0.16 |
Books many | =1 if >250 books in household | 0.20** | 0.14 |
Books medium | =1 if 50–250 books in household | 0.53*** | 0.43 |
Books few | =1 if <50 books in household | 0.27*** | 0.43 |