Table 4.
Characteristics of Tapping Inhibition Task Participants, by Alcohol-Exposure Group
| Alcohol-exposed (n = 113) | Non–alcohol-exposed (n = 60) | ||||||
|---|---|---|---|---|---|---|---|
| Variable | Mean | SD | Mean | SD | df | χ2/F | p Value |
| Birth Characteristics | |||||||
| Gestational age (weeks) | 38.3 | 2.4 | 38.4 | 2.2 | 171 | <0.1 | 0.93 |
| Birth weight (kg)a | 2.87 | 0.04 (SE) | 3.15 | 0.06 (SE) | 1 | 14.9 | 0.001 |
| Birth length (cm)a | 48.3 | 0.23 (SE) | 49.1 | 0.32 (SE) | 1 | 3.9 | 0.05 |
| Head circumference (cm) | 33 | 0.14 (SE) | 33.8 | 0.19 (SE) | 1 | 11 | 0.01 |
| Intellectual functioning | |||||||
| WPPSI-R full-scale IQ | 83.9 | 12.4 | 87.4 | 11.8 | 171 | 1.8 | 0.08 |
| WPPSI-R verbal IQ | 82.7 | 11.2 | 85.6 | 11.1 | 171 | 1.7 | 0.1 |
| WPPSI-R performance IQ | 88.4 | 14.0 | 92.1 | 14 | 171 | 1.7 | 0.1 |
a
Variance in birth size associated with gestational age controlled for statistically.