Results of psychometric testing
| Mean scores (SD) | Difference (IQ points) | p value | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Cases (n = 115) | Controls (n = 115) | Raw | Adjusted4-150 (95% CI) | ||||||
| VMI | 93.4 (12.5) | 99.2 (12) | 5.8 | 5.1 (2.0–8.3) | 0.002 | ||||
| VIQ | 92.7 (16.3) | 100 (16.2) | 7.3 | 5.4 (1.7–9.2) | 0.005 | ||||
| PIQ | 94.8 (16.0) | 102 (15.2) | 7.2 | 5.9 (2.0–9.7) | 0.003 | ||||
| TIQ | 92.9 (16.3) | 101.1 (15.8) | 8.2 | 6.4 (2.7–10.1) | 0.001 | ||||
↵4-150 Adjusted for social class, number of sibs, number of adult carers, parental further education, and type of housing.
VMI, visual–motor integration; VIQ, verbal IQ; PIQ, performance IQ; TIQ, total IQ.