Table 3.
Comparison of early-life exposure to cannabis and tobacco.
| Prenatal Exposure to Cannabis | Childhood Exposure to Cannabis | Prenatal Exposure to Tobacco | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Not Exposed n = 75 |
Exposed n = 6 |
p-Value | Not Exposed n = 71 |
Exposed n = 10 |
p-Value | Not exposed n = 72 |
Exposed n = 9 |
p-Value | |
| Childhood exposure to cannabis | |||||||||
| Not exposed (n = 71) | 67 (89%) | 4 (67%) | 0.10 | ||||||
| Exposed (n = 10) | 8 (11%) | 2 (33%) | |||||||
| Prenatal exposure to tobacco a | |||||||||
| Not exposed (n = 72) | 69 (92%) | 3 (50%) | <0.01 | 65 (92%) | 7 (70%) | 0.04 | |||
| Exposed (n = 9) | 6 (8%) | 3 (50%) | 6 (8%) | 3 (30%) | |||||
| Childhood exposure to tobacco b | |||||||||
| Not exposed (n = 65) | 62 (83%) | 3 (50%) | 0.05 | 59 (83%) | 6 (60%) | 0.09 | 62 (86%) | 3 (33%) | <0.01 |
| Exposed (n = 16) | 13 (17%) | 3 (50%) | 12 (17%) | 4 (40%) | 10 (14%) | 6 (67%) | |||
a Prenatal exposure to tobacco was determined by the detection of cotinine in maternal urine collected at ~27 weeks gestation. The categories were as follows: exposed (cotinine > 0.05 ng/mL, the limit of detection (LOD)) and not exposed (cotinine < LOD). b Childhood exposure to tobacco was determined by the detection of cotinine in child urine collected at ~27 weeks gestation. The categories were as follows: exposed (cotinine > LOD) and not exposed (cotinine < LOD).