Table 4.

The prevalence of ‘legal’ and ‘illegal’ RB behaviors by RB clinical status.

Type of RB behavior	Prevalence		Prevalence		Boys estimated risk ratio	Girls estimated risk ratio
	Boys with RB	Boys without RB	Girls with RB	Girls without RB
Legal behaviors, mother report	84.5%	65.8%	82.9%	53.5%	1.28**	1.55**
Legal behaviors, father report	89.8%	63.2%	83.0%	58.3%	1.42**	1.42**
Legal behaviors, teacher report	61.9%	28.1%	49.0%	14.5%	2.20**	3.38**
Illegal behaviors, mother report	52.3%	5.2%	31.0%	4.3%	10.06**	7.21**
Illegal behaviors, father report	35.8%	3.7%	23.6%	2.6%	9.68**	9.08**

Note. Legal RB behaviors are defined to include breaking rules, lacking guilt, lying or cheating, preferring the company of older peers, and having delinquent friends. Illegal RB behaviors are defined to include setting fires, stealing at home or outside the home, running away, vandalism, and truancy. Teacher reports of illegal behaviors are not included here, as four of the six items are not assessed. Prevalences were computed via estimated marginal means in HLM to adjust for the non-independence of twins within families. Age and ethnicity were added as covariates.

^{* and **}indicate that the risk ratio is significantly greater than zero at p< .05 or p<.01, respectively.