Table 1.
Study of adolescent PE: sample characteristics of participants included and excluded from the study
| Included | Excluded | OR (95% CI) | p value | |
|---|---|---|---|---|
| Female sex | 1706/2952 (57.8) | 5040/10 991 (45.9) | 1.62 (1.49–1.76) | <0.001 |
| Number of trauma types (ages 0–14) | ||||
| 0 | 1599/2952 (54.2) | 4461/7840 (56.9) | 0.36 (0.34–0.38) | 0.01 |
| 1 | 830 (28.1) | 2157 (27.5) | 1.07 (0.97–1.18) | |
| 2 | 359 (12.2) | 814 (10.4) | 1.23 (1.07–1.41) | |
| 3 | 133 (4.5) | 348 (4.4) | 1.07 (0.87–1.31) | |
| 4 | 26 (0.9) | 58 (0.7) | 1.25 (0.78–1.99) | |
| 5 | 5 (0.2) | <5 (0.03) | 6.97 (1.35–35.98) | |
| PTSD symptoms (age 15) | 75/2952 (2.5) | 71/2137 (3.3) | 0.76 (0.55–1.05) | 0.10 |
| Frequent or distressing PEs (age 12–18) | 94/2952 (3.2) | 86/1478 (5.8) | 0.53 (0.39–0.72) | <0.001 |
| Parental psychiatric history | 469/2952 (15.9) | 1929/10 157 (19.0) | 0.81 (0.72–0.90) | <0.001 |
| Mean IQ | 108.9 (n = 2723) | 101.2 (n = 4306) | 1.03 (1.02–1.03) | <0.001 |
| Parents’ highest social class | 572/2829 (20.2) | 951/8642 (11.0) | 1.60 (1.51–1.69) | <0.001 |
| Lowest income | 322/2733 (11.8) | 1667/7180 (23.2) | 1.28 (1.24–1.33) | <0.001 |
| Maternal education: <O levels | 448/2916 (15.4) | 3274/9469 (34.6) | 1.91 (1.80–2.01) | <0.001 |
| Parental dug use | 233/2942 (8.1) | 1073/10 471 (10.3) | 0.76 (0.65–0.87) | <0.001 |