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. Author manuscript; available in PMC: 2008 Apr 30.
Published in final edited form as: J Health Econ. 2006 Nov 28;26(3):431–446. doi: 10.1016/j.jhealeco.2006.10.012

Table 6. Robustness Test: Calendar Year Effects.

Whites Blacks
Under 35 35 and Over Under 35 35 and Over
Mandate * (1980–1984) −0.0074 (0.0189) 0.1634 (0.1180) −0.1689 (0.0563) *** −0.1868 (0.1119) *
Mandate * (1985–1989) 0.0024 (0.0163) −0.0231 (0.1048) −0.0617 (0.0371) * −0.1212 (0.1054)
Mandate * (1990–1994) 0.0114 (0.0135) 0.1847 (0.0706) *** −0.0651 (0.0368) * −0.0853 (0.0870)
Mandate * (1995–1999) 0.0043 (0.0171) 0.2318 (0.0973) ** −0.0664 (0.0663) −0.0798 (0.0658)
F test of joint significance 0.29 2.25 * 3.01 ** 0.80

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.