Table A6:
(1) | (2) | (3) | ||
---|---|---|---|---|
Low Birth Weight | Term Birth Weight | Premature Birth | ||
Panel A: Mom Born in Pennsylvania | ||||
Within 2.5 km * post | 0.0128*** | −50.87*** | −0.00523 | |
(0.00466) | (15.99) | (0.00645) | ||
Observations | 17,491 | 15,814 | 17,155 | |
R-squared | 0.022 | 0.081 | 0.012 | |
Pre-drilling Mean | 0.0576 | 3415 | 0.0791 | |
Panel B: Top 10 Major Production Counties | ||||
Within 2.5 km * post | 0.0160* | −44.52*** | −0.00303 | |
(0.00726) | (12.03) | (0.0104) | ||
Observations | 15,052 | 13,627 | 14,789 | |
R-squared | 0.025 | 0.081 | 0.017 | |
Pre-drilling Mean | 0.0573 | 3415 | 0.0790 | |
Panel C: Top 10 Major Drilling Counties | ||||
Within 2.5 km * post | 0.0175** | −46.66*** | 0.000296 | |
(0.00576) | (12.36) | (0.00978) | ||
Observations | 13,208 | 11,951 | 12,957 | |
R-squared | 0.024 | 0.076 | 0.016 | |
Pre-drilling Mean | 0.0559 | 3423 | 0.0783 |
Notes: Each coefficient is from a different regression. The sample is limited to singleton births, the sample with a well/permit within 2.5 km and to the panel headings listed. All regressions include indicators for month and year of birth, month*year, residence county indicators, an indicator for drilling before birth (defined by closest well), an indicator for residence within 2.5 km of a well or future well and the interaction of interest of Within 2.5km*post-drilling. Maternal characteristics include mother black, mother Hispanic, mother education (hs, some college, college), mother age (19–24,25–34, 35+), female child, WIC, smoking during pregnancy, marital status and payment type (private insurance, medicaid, self-pay, other). Indicators for missing data for these variables are also included. Standard errors are in parentheses and clustered at the mother’s residence county.
Significance:
p<0.10,
p<0.05,
p<0.01.