Table 1.
Deprivation quintiles, age, and sex by group (for whom follow-up data were available)
| Control (n = 837) | Intervention (n = 825) | |
|---|---|---|
| Individual level | ||
| Age at recruitment (n) | 835 | 825 |
| Mean (SD) | 6.67 (1.99) | 6.71 (2.02) |
| Missing | 2 | 0 |
| Sex (n) | 828 | 824 |
| Male, n (%) | 427 (51.6) | 421 (51.1) |
| Female, n (%) | 401 (48.4) | 403 (48.9) |
| Missing | 9 | 1 |
| Deprivation quintile (n) | 821 | 798 |
| 1, most deprived, n (%) | 455 (55.4) | 487 (61.0) |
| 2, n (%) | 173 (21.1) | 144 (18.1%) |
| 3, n (%) | 97 (11.8) | 51 (6.4) |
| 4, n (%) | 55 (6.7) | 64 (8.0) |
| 5, least deprived, n (%) | 41 (5.0) | 52 (6.5) |
| Missing | 14 | 27 |
| Cluster level | ||
| Family size | N = 477 | N = 478 |
| 1 child family, n (%) | 207 (43.4) | 217 (45.4) |
| 2 child family, n (%) | 194 (40.7) | 186 (38.9) |
| 3 child family, n (%) | 66 (13.8) | 65 (13.6) |
| 4 child family, n (%) | 7 (1.5) | 10 (2.1) |
| 5 child family, n (%) | 2 (0.4) | 0 (0) |
| 6 child family, n (%) | 1 (0.2) | 0 (0) |
| Deprivation quintile | N = 466 | N = 464 |
| 1, most deprived, n (%) | 251 (53.9) | 283 (61.0) |
| 2, n (%) | 97 (20.8) | 85 (18.3) |
| 3, n (%) | 55 (11.8) | 30 (6.5) |
| 4, n (%) | 36 (7.7) | 36 (7.8) |
| 5, least deprived, n (%) | 27 (5.8) | 30 (6.5) |
| Missing | 11 | 14 |
| Cluster sizes | ||
| Observed coefficient of variation | 0.46 | 0.45 |