TABLE 2.

—Bivariate Probit Coefficients and Marginal Effects: Determinants of Sexual Activity and Contraceptive Use Among Women Aged 15–19 Years, 1995 National Survey of Family Growth (NSFG).

	Sexual Activity			Contraceptive Use
Variable	Coefficient	SE	Marginal Effect	Coefficient	SE	Marginal Effect
Constant	–4.470	.620	. . .	2.153	2.151	. . .
Black	.162	.141	.061	.073	.232	.017
Hispanic	–.032	.143	–.012	–.208	.219	–.050
Age	.261***	.037	.098	–.087	.112	–.021
Years since menarche	.065**	.027	.024	. . .	. . .	. . .
No-parent household	.548**	.236	.205	–.057	.336	–.014
Single-parent household	.301***	.089	.113	–.045	.162	–.011
Parents’ education	–.027	.015	–.010	.013	.024	.003
Household income < $20 000	.130	.094	.048	–.113	.138	–.027
Household income > $70 000	–.002	.108	–.001	–.160	.177	–.038
Raised as Catholic	–.010	.096	–.003	–.085	.146	–.020
Raised with no religion	.344***	.132	.129	–.282	.192	–.067
Urban	–.061	.125	–.023	.052	.187	.012
Northeast	.045	.128	.017	.145	.190	.034
Midwest	–.036	.112	–.014	–.004	.172	–.001
West	–.169	.133	–.063	–.132	.228	–.031
Percentage tract Black	–.004*	.002	–.002	–.001	.004	–.0002
Percentage tract Hispanic	.001	.004	.0002	.003	.005	.001
Median income in tract ($1000s)	–.008**	.004	–.003	.020***	.006	.005
County unemployment rate	–.007	.018	–.003	–.049	.037	–.012
Family planning clinics (per 10 000 women aged 15–44 years) in county of residence	–.010	.018	–.004	.079*	.042	.019
Sex education requirement	.001	.085	.0005	–.115	.131	–.027
Abortion provider in county of residence	.032	.103	.012	–.045	.148	–.010
Medicaid funding of abortions	.051	.110	.019	–.073	.166	–.017
Parental notification or consent law	.043	.101	.016	.026	.163	.006
Correlation coefficient (SE)	–.663 (.762 )
Log-likelihood		–1029.102
Sample size		1 280

*Statistically significant at .1 level; **statistically significant at .05 level; *** statistically significant at .01 level (2-tailed test). Models include controls for missing county and tract variables.