Table 2.
Intelligence quotient from Weschler scales
| AS | HFA | Raw p value | Adjusted p value | Difference AS-HFA (95% CI) | t test (df) | |
|---|---|---|---|---|---|---|
| Mean (SD) | Mean (SD) | |||||
| Full scale intelligent quotient (FSIQ) | 114.1 (15.9) | 92.1 (14.5) | < 0.0001 | < 0.0001 | 22.04 (17.08–26.99) | 8.78 (147) |
| WISC-IV | ||||||
| Verbal comprehension index (VCI) | 122.0 (16.4) | 96.1 (18.8) | < 0.0001 | < 0.0001 | 25.94 (17.19–34.69) | 5.92 (66) |
| Perceptual reasoning index (PRI) | 117.5 (14.8) | 93.5 (13.7) | < 0.0001 | 0.0002 | 23.95 (16.67–31.23) | 6.57 (67) |
| Working memory index (WMI) | 103 (17.4) | 84.5 (14.8) | < 0.0001 | < 0.0001 | 18.56 (10.1–27.03) | 4.38 (64) |
| Processing speed index (PSI) | 94.3 (17.1) | 82.5 (10.9) | 0.0017 | 0.0017 | 11.77 (4.55–18.98) | 3.25 (77) |
| WISC-III | ||||||
| Verbal intelligent quotient (VIQ) | 112.7 (16.1) | 93.4 (16.4) | < 0.0001 | < 0.0001 | 19.31 (10.47–28.14) | 4.38 (54) |
| Performance intelligent quotient (PIQ) | 109.2 (15.7) | 91.9 (16.7) | 0.0002 | < 0.0001 | 17.26 (8.68–25.84) | 4.03 (56) |
AS Asperger syndrome, HFA high functioning autism, CI confidence interval, df degree of freedom