Table 4.
Association Between Number of Plants Within 20 km, by Fuel Type, and Adverse Birth Outcomes in Florida From 2004 to 2005
| Type and No. of Power Plants Within 20 km | Term LBW |
PTD |
VPTD |
|||
|---|---|---|---|---|---|---|
| aORa | 95% CI | aORa | 95% CI | aORa | 95% CI | |
| All plants | ||||||
| 0 | 1.00 | Referent | 1.00 | Referent | 1.00 | Referent |
| 1 | 0.93 | 0.86, 1.01 | 1.08 | 1.04, 1.13 | 1.06 | 0.95, 1.17 |
| ≥2 | 1.07 | 1.01, 1.12 | 1.12 | 1.09, 1.15 | 1.17 | 1.09, 1.25 |
| Coal plant | ||||||
| 0 | 1.00 | Referent | 1.00 | Referent | 1.00 | Referent |
| 1 | 0.93 | 0.87, 1.00 | 1.09 | 1.05, 1.13 | 0.99 | 0.91, 1.08 |
| ≥2 | 1.12 | 1.03, 1.22 | 1.20 | 1.14, 1.25 | 1.23 | 1.10, 1.36 |
| Gas plant | ||||||
| 0 | 1.00 | Referent | 1.00 | Referent | 1.00 | Referent |
| 1 | 1.07 | 1.02, 1.13 | 1.05 | 1.02, 1.08 | 1.13 | 1.06, 1.21 |
| ≥2 | 1.06 | 1.00, 1.12 | 1.13 | 1.10, 1.17 | 1.13 | 1.06, 1.21 |
| Oil plant | ||||||
| 0 | 1.00 | Referent | 1.00 | Referent | 1.00 | Referent |
| 1 | 1.07 | 1.02, 1.12 | 1.10 | 1.07, 1.12 | 1.18 | 1.12, 1.25 |
| ≥2 | 0.97 | 0.89, 1.06 | 0.99 | 0.95, 1.04 | 0.83 | 0.74, 0.94 |
| Nuclear plantb | ||||||
| 0 | 1.00 | Referent | 1.00 | Referent | 1.00 | Referent |
| ≥1 | 1.03 | 0.93, 1.15 | 0.92 | 0.86, 0.98 | 0.88 | 0.75, 1.02 |
| Solid waste plant | ||||||
| 0 | 1.00 | Referent | 1.00 | Referent | 1.00 | Referent |
| 1 | 1.08 | 1.04, 1.13 | 1.06 | 1.03, 1.09 | 1.13 | 1.06, 1.20 |
| ≥2 | 1.00 | 0.93, 1.07 | 1.09 | 1.06, 1.13 | 1.13 | 1.04, 1.22 |
| Other plant | ||||||
| 0 | 1.00 | Referent | 1.00 | Referent | 1.00 | Referent |
| 1 | 0.94 | 0.87, 1.02 | 1.03 | 0.99, 1.08 | 1.07 | 0.98, 1.19 |
| ≥2 | 0.95 | 0.80, 1.14 | 0.86 | 0.78, 0.96 | 0.77 | 0.60, 0.99 |
Abbreviations: aOR, adjusted odds ratio; CI, confidence interval; LBW, low birth weight; PTD, preterm delivery; VPTD, very preterm delivery.
a Adjusted for maternal age, maternal race, maternal education, marital status, census block group income, and urban neighborhood.
b Nuclear plants are categorized differently because there are no births with 2 or more nuclear plants within 20 km.