| |
Birth weight
|
Small for gestational age
|
Preterm birth
|
|---|
|
Model covariates*
|
Change (in grams)
|
95% CI
|
OR
|
95% CI
|
OR
|
95% CI
|
|---|
|
Cumulative traffic density
|
-2.0
|
-3.7, -0.3
|
1.02
|
1.01, 1.04
|
1.00
|
0.98, 1.01
|
|
Distance to major highways
|
5.7
|
3.4, 7.9
|
0.98
|
0.97, 0.99
|
1.00
|
0.99, 1.02
|
|
% land use for recreation and conservation (open space)
|
13.4
|
10.4, 16.5
|
0.96
|
0.95, 0.97
|
1.01
|
1.00, 1.03
|
- APNCU – adequacy of prenatal care utilization; CI – confidence interval; OR – odds ratio; SD – standard deviation; SEM – socioeconomic measures
- Model controlled additionally for race (where appropriate) mother age, gestational age (for models with birth weight as the outcome), cigarette smoking during pregnancy, previous infant greater than 4000 grams, previous preterm birth, chronic or gestational conditions of mother, and year of birth.
- *The effect is for 1 SD change in distribution of log-transformed traffic exposures and 1 SD change in distribution of % open space by census tract.
