Table A4:

Impact of Number of Wells by Proximity

	(1)	(2)	(3)	(4)	(5)	(6)	(7)
	d < 2 km	d < 2:5 km	d < 3 km	d < 3:5 km	d < 4 km	d < 4:5 km	d < 5 km
Panel A: Low Birth Weight
Wells in ‘d‘ km * post-drilling	0.00410*	0.00306***	0.00232***	0.00122**	0.000266	0.000194	0.000209
	(0.00231)	(0.000931)	(0.000758)	(0.000509)	(0.000433)	(0.000302)	(0.000260)
Observations	14,049	21,524	28,756	36,241	44,442	51,994	58,976
R-squared	0.023	0.021	0.020	0.019	0.018	0.018	0.017
Pre-drilling Mean	0.0583	0.0570	0.0578	0.0578	0.0575	0.0573	0.0575
Panel B: Term Birth Weight
Wells in ‘d’ km * post-drilling	−3.857	−5.386***	−4.716***	−3.152***	−2.429***	−1.438**	−0.930**
	(2.609)	(1.632)	(1.331)	(0.818)	(0.644)	(0.570)	(0.415)
Observations	12,694	19,463	25,969	32,692	40,067	46,822	53,049
R-squared	0.080	0.076	0.078	0.077	0.079	0.076	0.075
Pre-drilling Mean	3415	3416	3415	3412	3412	3415	3415
Panel C: Premature
Wells in ‘d’ km * post-drilling	0.00366*	0.00257**	0.00212**	0.000889	0.000281	0.000235	0.000406
	(0.00210)	(0.00123)	(0.000889)	(0.000718)	(0.000602)	(0.000398)	(0.000331)
Observations	13,784	21,109	28,206	35,519	43,506	50,825	57,606
R-squared	0.017	0.011	0.010	0.010	0.009	0.008	0.008
Pre-drilling Mean	0.0803	0.0785	0.0790	0.0789	0.0781	0.0781	0.0786

Notes: See Table 6 for specification details.

Significance:

^*p<0.10,

^**p<0.05,

^***p<0.01.