Pattern of missing data
| Variable | Age of assessment | n | % Missing |
|---|---|---|---|
| Psychotic experiences | 18 | 4199 | 51.5 |
| 12 | 6115 | 29.4 | |
| DANVA | 8 | 6091 | 29.6 |
| Locus of control | 1938 | 76.8 | |
| 16 | 4337 | 49.9 | |
| Emotional triangles | 12 | 5113 | 40.9 |
| SCDC | 7 | 2174 | 74.9 |
| 10 | 2441 | 71.8 | |
| 13 | 2442 | 71.8 | |
| 16 | 1870 | 78.4 | |
| Maternal marital status | Child’s birth | 8656 | 0 |
| Maternal education | 8656 | 0 | |
| IQ | 8 | 6009 | 30.6 |
| Emotion domain of SDQ | 7 | 6488 | 25.1 |
DANVA Diagnostic Analysis of Non-verbal Accuracy. SCDC Social Communication Disorders Checklist. SDQ Strengths and Difficulties Questionnaire