Table 2.
Subtest | Overall mean (SD) | PTF (SD) | TF (SD) | P value TF vs. PTF | Crossover (SD) | P value crossover vs. PTF |
---|---|---|---|---|---|---|
FSIQ | 92.7 (14.9) | 94.2 (15.6) | 93.2 (13.4) | 0.70 | 88.4 (16.5) | 0.18 |
VCI | 96.6 (15.3) | 99.0 (16.8) | 96.6 (14.1) | 0.47 | 91.6 (14.0) | 0.12 |
FDI | 95.8 (16.3) | 93.0 (20.4) | 98.4 (11.7) | 0.19 | 96.3 (14.8) | 0.65 |
POI | 91.4 (14.3) | 91.4 (13.9) | 92.7 (13.3) | 0.84 | 88.5 (17.1) | 0.42 |
PSI | 96.0 (15.9) | 100.0 (18.0) | 95.0 (13.9) | 0.12 | 89.9 (13.3) | 0.04 |
FDI freedom from distractibility index, FSIQ full-scale intelligence quotient, POI perceptual organization index, PSI processing speed index, PTF preterm formula, SD standard deviation, TF term formula, VCI verbal comprehension index.