Table 6.

First Interview Age Differences in the Effect of Youth Violent Victimization on the Rate of (a) Dating Debut and (b) Progression to First Union (Cox Regression Models)

	(a) Dating Debut			(b) Progression to First Union
	b	(SE)	HR	b	(SE)	HR
Early Adolescence (≤ Age 14)
Youth Violent Victimization	−.228*b,c	(.091)	.796	−.339*d,e	(.137)	.712
Youth Violent Victimization x Timea
Late Adolescence (> Age 14)
Youth Violent Victimization	.312***	(.074)	1.366	.436***	(.106)	1.547
Youth Violent Victimization x Time	−.006**	(.002)	.994	−.008***	(.002)	.992
N of Eventsf	6,976			4,715
N of Respondentsf	8,738			6,976

Source: National Longitudinal Study of Adolescent to Adult Health (Add Health), 1994 to 2008.

Note: b = hazard coefficient; SE = standard error; HR = hazard ratio (HR) = exp(b). Estimates are weighted and adjusted for complex survey design. Models also include all the variables listed in Table 4.

^aPreliminary analyses indicated that the effect of YVV x time in early adolescence is not statistically significant but is significantly different from the effect of YVV x time in late adolescence, and thus is constrained to be zero.

^bDifference in the effects of YVV in early adolescence and late adolescence is statistically significant (Wald χ², F (1,124.5) = 24.21, p = .0000).

^cJoint effects of YVV in early adolescence, YVV in late adolescence, and YVV x time in late adolescence are statistically significant (Wald χ², F (3,123.9) = 8.55 p = .0000).

^dDifference in the effects of YVV in early adolescence and late adolescence is statistically significant (Wald χ², F (1,125.8) = 7.98, p = .0055).

^eJoint effects of YVV in early adolescence, YVV in late adolescence, and YVV x time in late adolescence are statistically significant (Wald χ², F (2,126.0) = 9.85 p = .0000).

^fUnweighted N.

^*p < .05;

^**p < .01;

^***p < .001 (two-tailed tests).