Table 4.
Comparison of Intelligence Quotient Scores at Age 5 Years Between Children With Congenital Cytomegalovirus and Controls in the West London Study
| Children With Congenital CMV | Controls | P Valuea | |
|---|---|---|---|
| IQ Score | (n = 69) | (n = 108) | |
| Overall IQ | |||
| Median | 109.0 | 111.5 | |
| Mean | 111.7 | 113.0 | |
| Variance | 246.6 | 185.0 | .561 |
| Performance IQ | |||
| Median | 118.0 | 118.0 | |
| Mean | 119.3 | 118.1 | |
| Variance | 201.6 | 198.8 | .566 |
| Verbal IQ | |||
| Median | 97.0 | 105.5 | |
| Mean | 102.6 | 106.0 | |
| Variance | 315.6 | 186.2 | .056 |
Abbreviations: CMV, cytomegalovirus; IQ, intelligence quotient.
a Obtained with 2-sample t test for overall IQ and performance IQ, and with Kruskal-Wallis test for verbal IQ, as variances were significantly different (P = .01).