Table 4. Effects of Mandates on First Birth Rates, by Coverage of the Population.

	Whites		Blacks
	Under 35	35 and Over	Under 35	35 and Over
A. Private Health Insurance
Mandate * share with private health insurance	0.0083 (0.0170)	0.2552 (0.0955) ***	−0.0008 (0.0421)	−0.1087 (0.1074)
B. Firm size
Mandate * share in firms with less than 99 emp	−0.0294 (0.0518)	−0.6446 (0.5689)	−1.4028 (0.5498) **	0.1759 (0.5506)
Mandate * share in firms with 100–999 emp	0.1449 (0.1635)	1.1101 (1.4008)	0.3468 (0.9482)	−0.1524 (1.5887)
Mandate * share in firms with 1000 + emp	−0.0338 (0.0707)	0.4450 (0.6970)	1.1796 (1.0573)	−0.3685 (1.0287)
F test of joint significance of firm size*mandate interactions	0.28	3.43 **	6.82 ***	0.56
F-test of equality of firm size* mandate interactions	0.40	0.99	10.13 ***	0.14
C. Share of population affected by Mandate (due to variation in treatment of HMOs)
	0.0408 (0.0115) ***	0.2064 (0.0807) **	−0.0495 (0.0511)	−0.1772 (0.0912) *

Notes: Dependent variable is the log of the first birth rate in a state-year-race-age cohort cell. White robust standard errors clustered by state in parentheses. Regressions include state and year fixed effects, as well as age*year interactions. Regressions are weighted by cell-level population counts. Levels of statistical significance: *** denotes significance at the one-percent level; ** at the five-percent level; and * at the ten-percent level. Coefficients in bold statistically differ by age group at the ten-percent level or higher.