Table 2.
Child Characteristics
| COCAINE | NON-COCAINE | ||||||
|---|---|---|---|---|---|---|---|
| (n = 192) | (n = 179) | ||||||
| n (%) | n (%) | χ2 | p | ||||
| Sex (male) | 87 (45.3) | 87 (48.6) | .4 | .53 | |||
| Prematurity (<37 weeks gestational age) | 55 (28.7) | 35 (19.6) | 4.2 | .04 | |||
| Low birth weight (< 2500gms) | 70 (36.5) | 33 (18.4) | 15.0 | .0001 | |||
| Very low birth weight (< 1500gms)* | 12 (6.3) | 7 (3.9) | 1.04 | .31 | |||
| Small for gestational age | 24 (12.7) | 3 (1.7) | 16.3 | .0001 | |||
| IDA | 9 (4.7) | 2 (1.1) | 4.1 | .04 | |||
| Mean | (SD) | Mean | (SD) | t/F | df | ||
| Gestational age (weeks) | 37.8 | (2.8) | 38.4 | (2.9) | 2.23 | 369 | .03 |
| Birth weight (grams) | 2704 | (645.0) | 3101 | (701.3) | 39.2 | 2,368 | .0001 |
| Birth length (cm) | 47.3 | (3.9) | 49.1 | (3.7) | 19.9 | 2,368 | .0001 |
| Head circumference (cm) | 32.2 | (2.1) | 33.5 | (2.4) | 28.1 | 2,365 | .0001 |
| Hobel neonatal risk score | 7.5 | (16.5) | 5.9 | (15.9) | −0.92 | 364 | .36 |
| Lead exposure at 2 and 4 years | 6.98 | (4.11) | 8.10 | (4.59) | 2.28 | 291 | .02 |
| Age at assessment | 9.10 (0.24) | 9.10 (0.20) | 0.13 | 1,369 | .72 | ||
*
Groups were matched for very low birth weight