Table 8 Effect sizes for cross-sectional and longitudinal behavioural risk markers of self-injury over ten years
| Â | Cross-sectional effect sizes: significant differences between absent/present SIB | Longitudinal effect sizes: significant difference between absent/persistent SIB | ||||
|---|---|---|---|---|---|---|
Risk markers | Time 11 N = 149 | Time 22 N = 67 | Time 3 N = 67 | T1–T2 3 years N = 67 | T2–T3 7 years N = 46 | T1–T3 10 years N = 67 |
Mood Interest and Pleasure Questionnaire | ||||||
 Mood | O | O | O | O | O | O |
 Interest and pleasure | O | O | O | O | O | O |
The Activity Questionnaire | ||||||
 Impulsivity | + | ++ | ++ | ++ | ++ | +++ |
 Overactivity | + | ++ | ++ | O | ++ | ++ |
 Impulsive speech | + | O | O | O | ++ | O |
The Repetitive Behaviour Questionnaire | ||||||
 Compulsive behaviour | O | ++ | O | O | O | O |
 Insistence on sameness | O | O | ++ | O | ++ | O |
 Stereotyped behaviour | O | + | O | O | O | O |
The Social Communication Questionnaire | ||||||
 Communication | O | O | O | O | O | O |
 Social interaction | O | ++ | O | ++ | ++ | O |
 Repetitive behaviour | O | ++ | ++ | O | ++ | O |