Table 6.
Mixed-effects logistic regression results for the odds of preterm birth.
| Study Population (n = 103,484) | Deprived Tracts (n = 51,787) | ||||
|---|---|---|---|---|---|
| Model | OR | 95% CI | Model | OR | 95% CI |
| Mean NDVI (100 m Buffer) | |||||
| Adjusted | 0.8192 | 0.6571–1.0213 | Adjusted | 0.74646 | 0.5327–1.0460 |
| Unadjusted | 0.9256 | 0.7494–1.1432 | Unadjusted | 1.3161 | 0.9281–1.8663 |
| Mean NDVI (250 m buffer) | |||||
| Adjusted | 0.8406 | 0.6378–1.1078 | Adjusted | 0.7187 | 0.4580–1.1277 |
| Unadjusted | 0.934 | 0.7311–1.1932 | Unadjusted | 1.5019 | 0.9565–2.3584 |
| Mean NDVI (500 m buffer) | |||||
| Adjusted | 0.9109 | 0.6705–1.2373 | Adjusted | 0.83 | 0.4887–1.4097 |
| Unadjusted | 0.9219 | 0.7060–1.2039 | Unadjusted | 1.6211 | 0.9569–2.7465 |
| Street tree count (100 m buffer) | |||||
| Adjusted | 0.9989 * | 0.9978–0.9999 | Adjusted | 0.9984 | 0.9968–1.0001 |
| Unadjusted | 0.9954 * | 0.9944–0.9965 | Unadjusted | 0.9970 * | 0.9951–0.9988 |
| Street tree count (250 m buffer) | |||||
| Adjusted | 0.9998 * | 0.9995–1 | Adjusted | 0.9996 * | 0.9992–0.9999 |
| Unadjusted | 0.9987 * | 0.9985–0.9990 | Unadjusted | 0.9992 * | 0.9987–0.9996 |
| Street tree count (500 m buffer) | |||||
| Adjusted | 0.9999 * | 0.9998–0.9999 | Adjusted | 0.9998 * | 0.9997–0.9999 |
| Unadjusted | 0.9996 * | 0.9995–0.9996 | Unadjusted | 0.9997 * | 0.9996–0.9999 |
* Denotes significance. The adjusted models control for maternal age, race, region of birth, education, Medicaid status, marital status, tobacco use during pregnancy, and alcohol use during pregnancy; the infant’s gestational age, sex, and season of birth; the distance to industrial land use; the distance to the nearest major road; neighborhood deprivation; population density; access to major green space; and access to publicly accessible waterfront areas.