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Prevalence of Cocaine Use (%)
| Level of Use | |||
|---|---|---|---|
| Time Period | None | Occasionala | Frequentb |
| Year prior to pregnancy (N = 261) | 55.6 | 23.4 | 21.1 |
| First trimester (N = 261) | 59.0 | 22.6 | 18.4 |
| Second trimester (N = 234) | 92.7 | 3.0 | 4.3 |
| Third trimester (N = 258) | 89.1 | 4.7 | 6.2 |
| One-year follow-up (N = 261) | 85.1 | 7.7 | 7.3 |
Occasional: > 0 and < 1 line/day or gram equivalent of crack
Frequent: ≥1 line/day of cocaine or gram equivalent of crack
