Table 2.
Mean (SD) scores on cognitive and motor tests in children 7–9 y of age by conditions at birth
| |
UNIT |
Numbers stroop, failure |
Backwards digit |
MABC score |
Finger tapping test |
|||||
|---|---|---|---|---|---|---|---|---|---|---|
| |
(n = 1793) |
(n = 1812) |
(n = 1814) |
(n = 1782) |
(n = 1810) |
|||||
| Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD | |
| Not preterm |
50.3 |
10.0 |
0.30 |
0.46 |
1.94 |
1.12 |
8.43 |
6.14 |
36.6 |
5.3 |
| Preterm |
48.6 |
9.8 |
0.37 |
0.48 |
1.71 |
0.99 |
9.04 |
6.30 |
36.3 |
5.1 |
| Not SGA |
51.3 |
10.3 |
0.28 |
0.45 |
2.00 |
1.14 |
7.85 |
5.82 |
37.0 |
5.3 |
| SGA |
49.0 |
9.7 |
0.35 |
0.48 |
1.81 |
1.06 |
9.16 |
6.40 |
36.0 |
5.3 |
| Not LBW |
51.6 |
10.1 |
0.25 |
0.43 |
2.05 |
1.16 |
7.62 |
5.59 |
36.9 |
5.1 |
| LBW |
47.6 |
9.4 |
0.42 |
0.49 |
1.66 |
0.95 |
9.98 |
6.73 |
35.8 |
5.4 |
| No sepsis |
50.1 |
10.1 |
0.32 |
0.46 |
1.91 |
1.11 |
8.53 |
6.14 |
36.6 |
5.2 |
| Sepsis |
49.7 |
9.6 |
0.38 |
0.49 |
1.75 |
0.98 |
8.76 |
6.61 |
35.9 |
5.7 |
| No birth asphyxia |
49.9 |
10.0 |
0.32 |
0.47 |
1.89 |
1.1 |
8.46 |
6.06 |
36.5 |
5.2 |
| Birth asphyxia | 52.2 | 10.6 | 0.31 | 0.46 | 1.97 | 1.14 | 9.62 | 7.50 | 36.7 | 5.9 |
UNIT: Universal Nonverbal Test of Intelligence.
MABC: Movement Assessment Battery for Children.
Preterm defined as gestational age <37 weeks.
Low birth weight defined as <2500 g.
Small for gestational age (SGA) defined as birth weight less than the 10th percentile for a given gestational age and sex using the Alexander US-fetal growth reference (22).
Sepsis defined as at least 2 consecutive days of 2 of the following symptoms: 1) inability or difficulty suckling, 2) lethargy, 3) difficulty breathing, 4) convulsions or stiffness of back, 5) hot to touch or temp > 100 F, 6) cold to touch or temp < 96.6 F, 7) red purulent umbilicus.
Birth asphyxia defined as inability to cry at birth and one of the following symptoms: 1) inability to breathe at birth, 2) convulsions or spasms, or 3) inability to suckle normally after birth.