Table F3.

Effect of Birth Weight on IQ by Early Life Environments, OLS

Dependent Variable: High School IQ
Sample Division:	Mother’s Edu		Father’s Edu		Family SES		Urban/Rural
	< 12 yrs.	≥ 12 yrs.	< 12 yrs.	≥ 12 yrs.	< Median	≥ Median	Rural	Urban
	(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)
Std. Birth Weight	2.0727*** (0.6834)	0.9113 (0.6424)	0.6303 (0.6054)	2.5044*** (0.6755)	1.1651 (0.7589)	1.4363** (0.6725)	1.1013** (0.5135)	2.2896* (1.2775)
Baseline Controls	Y	Y	Y	Y	Y	Y	Y	Y
N	434	504	540	398	436	502	732	206
R Sqr.	0.0968	0.1221	0.1086	0.1250	0.0858	0.0872	0.1370	0.1205

Notes: This table regresses high school IQ on birth weight and the set of baseline controls. The set of baseline controls excludes the variable on which the sample is divided. Although not reported above, we have also dichotomized the sample by sex. For females, the coefficient of standardized birth weight is 1.64 (0.65); while for males, the coefficient is 1.12 (0.66).