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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 5. Robustness Test: Adding State-Specific Time Trends.

Whites Blacks
Under 35 35 and Over Under 35 35 and Over
A. Baseline results
 Mandate 0.0071 (0.0131) 0.1899 (0.0784) ** −0.0655 (0.0485) −0.0858 (0.0654)
B. With state-specific time trends
 Mandate 0.0120 (0.0089) 0.0927 (0.0594) −0.1055 (0.0478) ** −0.1432 (0.1214)

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.