Table 7.
Stepwise Regressions for the Prediction of Neonatal Outcome (N=200) From Drug and Obstetric Variables
| R2 |
R2 Change |
F Change |
P | |
|---|---|---|---|---|
| Criterion and drug predictor | ||||
| Birth weight | ||||
| Gestational age | .44 | .44 | 144.5 | <.001 |
| Cocaine | .46 | .02 | 77.7 | <.05 |
| Gestational age | ||||
| Cocaine | .04 | .04 | 8.8 | <.005 |
| Length | ||||
| Gestational age | .20 | .20 | 46.2 | <.001 |
| Cocaine×alcohol | .23 | .03 | <.02 | |
| Criterion and obstetric predictor | ||||
| Birth weight | ||||
| Gestational age | .44 | .44 | 144.5 | <.001 |
| Gestational age | ||||
| Total prenatal visits | .09 | .09 | 19.7 | <.001 |
| Abortions | .14 | .05 | 11.7 | <.001 |
| Length | ||||
| Gestational age | .20 | .20 | 46.2 | <.001 |
| Abortions | .23 | .03 | 5.4 | <.03 |