Table 1.
Sample Demographics and Perinatal-Environmental Risk Scores by Group
| High cocaine (n = 37) |
Low cocaine (n = 30) |
Nonexposed (n = 169) |
||||
|---|---|---|---|---|---|---|
| Demographic characteristic/risk score | M | SD | M | SD | M | SD |
| Mother | ||||||
| Education (yrs) | 11.46 | 1.32 | 11.60 | 1.30 | 11.21 | 1.48 |
| Age (yrs)* | 28.96 | 4.67a | 29.66 | 4.33b | 23.34 | 5.69b |
| Alcohol (no. drinks/day)*** | 1.25 | 2.00a | 0.62 | 1.18b | 0.04 | 0.25c |
| Cigarettes (no./day)*** | 8.99 | 8.54a | 8.37 | 9.96a | 1.64 | 4.46b |
| Marijuana (no. joints/day)** | 0.13 | 0.37a | 0.14 | 0.40a | 0.02 | 0.17b |
| Infant | ||||||
| Birth weight (g)*** | 2673.56 | 626.55a | 2871.96 | 443.87a | 3266.56 | 517.27b |
| Gestational age (weeks) | 37.68 | 2.66 | 38.20 | 1.63 | 39.62 | 1.68 |
| Sex (boys/girls) | 19/18 | 14/16 | 88/81 | |||
| Age (days) | 230.33 | 15.48 | 226.95 | 8.83 | 232.65 | 14.52 |
| Risk Score | ||||||
| Neonatal medical risk** | 1.73 | 2.31a | 0.77 | 1.15b | 0.55 | 1.16b |
| Environmental risk*** | 53.71 | 8.24a | 54.04 | 11.70a | 48.47 | 9.85b |
Note. Values with different subscripts are significantly different at p < .05, Tukey Multiple Range Test.
*
p < .05.
**
p < .01.
***
p < .001.