Table 4. Mean and standard deviation of WIAT Word Reading (top row in each cell) and Numerical Operations scores, by cognitive function profiles based on IQ and EF, and classification based on IQ only.
| Profile basd on IQ and EF | ||||
|---|---|---|---|---|
| Classification based on IQ Only | Normal | Low Normal | Moderately Impaired | Severely Impaired |
| Overalla | 107.8 (11.8) | 94.4 (13.2) | 77.9 (14.4) | 51.1 (15.1) |
| 103.2 (12.3) | 90.7 (11.7) | 71.8 (14.3) | 44.4 (10.0) | |
| n=299 | n=360 | n=145 | n=69 | |
| ZIQ > -1b | 107.8 (11.7) | 96.4 (12.7) | 88.5 (11.4) | 0 |
| 103.2 (12.3) | 92.7 (11.5) | 87.5 (13.0) | ||
| n=298 | n=264 | n=11 | ||
| -2 < ZIQ ≤ -1a | --- | 89.0 (13.2) | 81.0 (15.4) | 0 |
| --- | 85.7 (10.4) | 74.4 (13.8) | ||
| n=1 | n=94 | n=71 | ||
| ZIQ ≤ -2a | 0 | --- | 72.6 (11.4) | 51.1 (15.1) |
| --- | 66.1 (12.1) | 44.4 (10.0) | ||
| n=2 | n=63 | n=69 | ||
a
p<0.001 from ANOVA comparing means across the row, for both WIAT Word Reading and Numerical Operations, all pairwise comparisons p<0.001 from Scheffe's procedure
b
p<0.001 from ANOVA comparing LPA profiles of Normal, Low Normal, for both WIAT Word Reading and Numerical Operations