Table 2.
Infant Birth Characteristics
| Cocaine (n = 155)
|
Non-cocaine (n = 186)
|
|||||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | t | p | |
| Gestational age (wk) | 38.1 | 2 | 38.5 | 3 | 1.7 | .0923 |
| Birthweight (g)a | 2795.0 | 607 | 3102.0 | 688 | 21.6 | <.0001 |
| Birth length (cm)a | 47.7 | 4 | 49.1 | 4 | 9.6 | .0021 |
| Head circumferencea (cm) | 32.5 | 2 | 33.5 | 3 | 14.1 | .0002 |
| Apgar (1 min) | 8.1 | 1 | 7.9 | 2 | −1.31 | .1903 |
| Apgar (5 min) | 8.8 | 1 | 8.8 | 1 | −0.65 | .5170 |
| Hobel Neonatal Risk score | 5.5 | 11 | 5.6 | 16 | 0.06 | .9495 |
|
| ||||||
| n (%) | n (%) | χ2 | p | |||
|
| ||||||
| Gender (male) | 73 (4) | 92 (50) | 0.19 | .6634 | ||
| Prematurity (<37 wk gestational age) | 42 (27) | 33 (18) | 4.3 | .0378 | ||
| Low birth weight (<2500 g) | 51 (33) | 33 (18) | 10.5 | .0012 | ||
| Very low birth weight (<1500 g)b | 5 (3) | 7 (4) | 0.7 | .1648 | ||
| Small for gestational age | 19 (12) | 3 (2) | 16.0 | <.0001 | ||
a
p values adjusted for prematurity.
b
Groups balanced for very low birth weight.