Table 1.
Drop-out analysis comparing those included in the analysis to those lost to attrition
| Characteristic | Included (% or mean; sd) | Not included (% or mean; sd) | Included as reference category Odds Ratio (95% CI) |
|---|---|---|---|
| Gender | |||
| Male | 2324 (32.2%) | 4896 (67.8%) | [reference] |
| Female | 2502 (37.0%) | 4254 (63.0%) | 0.81 (0.75, 0.87) |
| Family adversity | 0.99 (1.35) | 1.51 (1.71) | 1.26 (1.22. 1.29) |
| Dysregulated behaviour 4 years | 7.00 (3.74) | 7.70 (4.00) | 1.05 (1.04, 1.06) |
| Dysregulated behaviour 7 years | 6.18 (4.13) | 6.89 (4.55) | 1.04 (1.03, 1.05) |
| Dysregulated behaviour 8 years | 6.18 (3.92) | 6.82 (4.27) | 1.04 (1.03, 1.05) |
| Maternal hitting | 0.61 (0.63) | 0.64 (0.68) | 1.07 (0.99, 1,15) |
| Maternal punishment | 1.68 (0.98) | 1.73 (1.03) | 1.05 (1.00, 1.10) |
| Maternal hostility | 0.88 (1.04) | 0.91 (1.04) | 1.03 (0.98, 1.07) |
| Bully victimisation at 8 | |||
| No | 2651 (65%) | 1426 (35%) | [reference] |
| Yes | 1642 (60%) | 1096 (40%) | 1.03 (1.02, 1.04) |
| Bully victimisation at 9 | |||
| No | 3382 (58.3%) | 2421 (41.7%) | [reference] |
| Somewhat true | 814 (54.7%) | 764 (45.3%) | 1.13 (1.00, 1.23) |
| Certainly true | 108 (50.0%) | 108 (50.0%) | 1.40 (1.07, 1.83) |
| Bully victimisation at 10 | |||
| No | 3569 (67.5%) | 1717 (32.5%) | [reference] |
| Yes | 1095 (62.9%) | 645 (37.1%) | 1.03 (1.02, 1.05) |
Boldface indicates a significant association