Table 1 Background characteristics of 30 participants with borderline IQ (i.e. full IQ score 70–84) and 146 participants in the reference group (i.e. full IQ equal to or above 85)
Borderline IQ | Reference group | |
|---|---|---|
Parental socioeconomic statusa | N (%) | N (%) |
I -II | 8 (31%) | 26 (20%) |
III | 13 (50%) | 27 (20%) |
IV-V | 5 (19%) | 79 (60%) |
Female sex | 20 (67%) | 80 (55%) |
In need of special education | 12 (40%) | 5 (3%) |
Birth weight groupb | ||
Very low birth weight (i.e. < 1500 g | 15 (50%) | 34 (23%) |
Term small for gestational age (< 10th centile) | 9 (30%) | 44 (30%) |
Term born control group | 6 (20%) | 68 (47%) |
Mean age (SD) in years at testing with K-SADS P/L | 19.2 (0.5) | 19.3 (0.8) |