Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Group differences on Bayley mental and motor scores
| Variable | Cocaine M ± SD |
Noncocaine M ± SD |
t | p |
|---|---|---|---|---|
| Chronologic age (months) | 17.1 ± 9 | 16.4 ± 8 | 0.5 | .62 |
| Corrected age (months) | 16.9 ± 9 | 16.2 ± 8 | 0.2 | .90 |
| Mental development indexa | 94.4 ± 17 | 102.5 ± 16** | 4.7 | < .05 |
| Psychomotor indexa | 101.2 ± 16 | 108.0 ± 12* | 4.0 | < .05 |
ps adjusted for gestational age.
p < .01;
p < .05.
