Table 3.
Proportions of the effects of green space exposure on postpartum depression due to mediation effects of physical activity during the entire pregnancy.
| Green space indicators | Percentage mediated by physical activity and 95% CI, % | p value |
|---|---|---|
| Street view green space 200 m | ||
| Total green space | 1.9 (−0.3 to 9.0) | 0.10 |
| Tree | 4.2 (−4.9 to 32.0) | 0.08 |
| Street view green space 500 m | ||
| Total green space | 2.7 (0.7–7.0) | 0.02 |
| Tree | 5.5 (1.5–37.0) | 0.03 |
| Street view green space 1000 m | ||
| Total green space | 3.4 (0.7–15.0) | 0.03 |
| Tree | 7.2 (2.7–60.0) | 0.02 |
| Tree canopy cover | ||
| Tree canopy 200 m | 8.4 (−78.2 to 67.0) | 0.22 |
| Tree canopy 500 m | 6.2 (1.8–50.0) | 0.02 |
| Tree canopy 1000 m | 6.9 (1.5–58.0) | 0.05 |
CI, confidence interval.
Models adjusted for maternal age, race/ethnicity, educational level, block group household income, smoking during pregnancy, pre-pregnancy BMI and season of conception. Zip code was fitted as a random effect.