Table 4.
Odds ratios for ICD-10 depression at age 18 years by victimisation at age 13 years
| Victimisation status | No (%) depressed | Unadjusted odds ratio (95% CI) | Odds ratio (95% CI) | |||||
|---|---|---|---|---|---|---|---|---|
| All available data (n=3898) | Complete cases (n=2668) | Adjusted (n=2668) | Unadjusted using imputed dataset* (n=6472) | Adjusted using imputed dataset† (n=3898) | Adjusted using imputed dataset* (n=6472) | |||
| None | 1769 (5.5) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | |
| Occasional | 1446 (7.1) | 1.31 (0.98 to 1.74) | 1.34 (0.93 to 1.93) | 1.08 (0.74 to 1.59) | 1.35 (1.01 to 1.81) | 1.08 (0.80 to 1.46) | 1.13 (1.02 to 1.12) | |
| Frequent | 683 (14.8) | 2.96 (2.21 to 3.97) | 3.33 (2.32 to 4.78) | 2.32 (1.49 to 3.63) | 2.82 (2.05 to 3.87) | 2.00 (1.39 to 2.87) | 1.87 (1.29 to 2.72) | |
| Linear trend | — | 1·13 (1·09 to 1·17) | 1.14 (1.09 to 1.18) | 1.08 (1.02 to 1.14) | 1.12 (1.08 to 1.16) | 1.07 (1.03 to 1.12) | 1.07 (1.02 to 1.12) | |
Adjustments: children’s individual characteristics (sex, emotional problems, behavioural problems, concurrent depressive symptoms, and concurrent bullying perpetration) and family characteristics (parental social class, mother’s education, maternal depression, and maltreatment as a child).
*Data on confounders and outcome (for those participants with a previous measure of depressive symptoms) imputed (n=6472).
†Only data on confounders imputed (n=3898).