Table 3.
Intelligence quotients (IQs) measured by Weschler revised intelligence scale for children* (verbal, performance, and overall IQ) at 7½ to 8 years according to diet. Standard term formula and preterm formula compared as sole diets (trial A), as supplements to mother’s milk (trial B), and in trials A and B combined. Values are group means (SE)
| Detail | Milk formula
|
Advantage for preterm formula (95% CI) | |
|---|---|---|---|
| Standard | Preterm | ||
| Trial A | |||
| No of subjects† | 67 | 66 | |
| Verbal IQ | 92.7 (2.0) | 97.6 (1.8) | 4.8 (−0.6 to 10.2) |
| Performance IQ | 97.7 (1.8) | 96.0 (2.1) | −1.7 (−7.2 to 3.8) |
| Overall IQ | 94.8 (1.7) | 97.0 (1.8) | 2.2 (−2.7 to 7.0) |
| Trial B | |||
| No of subjects† | 112 | 110 | |
| Verbal IQ | 102.7 (1.7) | 103.0 (1.7) | 0.3 (−4.6 to 5.1) |
| Performance IQ | 104.0 (1.5) | 105.1 (1.5) | 1.1 (−3.1 to 5.2) |
| Overall IQ | 103.2 (1.5) | 104.2 (1.4) | 1.0 (−3.0 to 5.0) |
| Trial A and B | |||
| No of subjects† | 179 | 176 | |
| Verbal IQ | 99.0 (1.4) | 100.9 (1.3) | 2.0 (−1.7 to 5.7) |
| Performance IQ | 101.7 (1.2) | 101.6 (1.3) | 0.03 (−3.4 to 3.4) |
| Overall IQ | 100.0 (1.2) | 101.4 (1.1) | 1.4 (−1.8 to 4.6) |
*
Abbreviated form; see text.
†
Numbers vary by up to two subjects in individual cells; see text.