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| Variable | p value |
| Maternal age | *0.000002 |
| Folic acid use | 0.052 |
| Prescription medication | 0.090 |
| Recreational drug use | 0.398 |
| Smoking currently or in the last 6 months | 0.488 |
| Married or living with partner | 0.834 |
Dependent variable is fetus with gastroschisis.
