Treatment group
(n=112) | Control group (n=108) | |
Mean (SD) maternal age (years) | 23.5 (5.7) | 24.0 (5.8) (n=107) |
Per cent non-white | 10% (n=110) | 12% |
Per cent Latina or Hispanic | 8% (n=109) | 7.5% n=107 |
Mean (SD) gestation period (weeks) | 16.6 (6.6) | 16.4 (7.4) |
Mean (SD) years of education attained | 11.6 (2.0) | 11.8 (1.7) |
Per cent married or living with a partner | 53% | 58% |
Percent household income < $20000 | 87% | 89% |
Mean (SD) salivary cotinine (ng/ml) | 45.4 (40.1) | 45.7 (47.5) |
Mean (SD) salivary thiocyanate (μg/ml) | 184.9 (79.5) | 183.0 (91.2) (n=107) |