TABLE 4.
Clinical and demographic characteristics of the stillbirth and live birth study populations including a comparison of women with a residence within 10 km of all six monitoring station types and women with a residence more than 10 km from every monitoring station type.
| All stillbirths (N=3,090) | Stillbirths (N=3,090) | All live births (N=707,110) | Live births (N=707,110) | |||||
|---|---|---|---|---|---|---|---|---|
| Residence near 0 station types (n=1,037) | Residence near all 6 stations types (n=335) | p-value | Residence near 0 station types (n=276,543) | Residence near all 6 stations types (n=57,271) | p-value | |||
| Age (mean) | 27.1 | 27.1 | 26.4 | 0.2 | 26.7 | 27.1 | 25.5 | < 0.0001* |
| Race (%) | < 0.0001* | < 0.0001* | ||||||
| White | 66.2 | 89.7 | 22.4 | 79.7 | 93.9 | 41.8 | ||
| Black | 29.6 | 6.0 | 74.0 | 17.2 | 4.1 | 55.7 | ||
| Other | 4.2 | 4.3 | 3.6 | 3.2 | 2.0 | 2.5 | ||
| Hispanic ethnicity (%) | 5.8 | 4.5 | 6.6 | 0.1 | 4.6 | 3.4 | 7.7 | < 0.0001* |
| Maternal education (%) | < 0.0001* | < 0.0001* | ||||||
| No high school degree | 20.4 | 16.8 | 27.9 | 17.6 | 15.1 | 30.7 | ||
| High school degree | 40.3 | 43.6 | 43.5 | 26.6 | 28.4 | 27.5 | ||
| Any college | 39.3 | 39.6 | 28.6 | 55.8 | 56.5 | 41.8 | ||
| Married (%) | 48.0 | 63.8 | 27.6 | < 0.0001* | 57.3 | 65.5 | 30.3 | < 0.0001* |
| Smoker (%) | 23.7 | 25.1 | 22.4 | 0.3 | 19.7 | 20.6 | 19.5 | < 0.0001* |
| Hypertension (%) | 9.5 | 9.3 | 13.7 | 0.08 | 6.2 | 6.2 | 6.9 | < 0.0001* |
| Diabetes (%) | 7.3 | 6.9 | 8.4 | 0.7 | 5.8 | 5.7 | 5.1 | < 0.0001* |
*
statistical significance