Table 1.
ID according to etiologic groups, average IQ score at the age of 4 years by the WPPSI, education, and impairments on adaptive behavior areasa
| ID group | n (%) | IQ average at 4 years of age (95% CI) | Children at special education | Children with two or more adaptive behavior impairments |
|---|---|---|---|---|
| Geneticb | 31 (20.5) | 62.5 (60.37–64.55) | 52.0% | 100.0% |
| Idiopathic | 19 (l2.6) | 66.9 (62.07–71.66) | 31.5% | 100.0% |
| Neonatal sequelae | 20 (13.2) | 62.8 (59.61–66.02) | 30.0% | 100.0% |
| Other diseases | 14 (9.3) | 65.6 (62.74–68.38) | 21.4% | 100.0% |
| Nonbiological | 67 (44.4) | 68.4 (65.82–70.92) | 0.0% | 13.4% |
CI = Confidence interval.
a
Communication, daily living, and social skills.
b
Two individuals were unable to complete the scale.