Table 2.

Regression parameters (βs & 95% confidence intervals) for models examining the effects of sex and gestational age on symptoms of inattention, hyperactivity, oppositional defiant disorder, and conduct problems

	Inattention	Hyperactivity	Oppositional Defiant	Conduct Problems
Sex	-.30 (-.36, -.24)	-.27 (-.33, -.21)	-.18 (-.24, -.12)	-.11 (-.17, -.04)
Gestational Age	-.10 (-.25, .05)	-.12 (-.30, .05)	-.16 (-.36, .04)	-.11 (-.25, .04)
Linear Interaction	.05 (-.12, .22)	.06 (-.11, .22)	.18 (-.01, .36)	.14 (0, .28)

Note: bold font indicates p<.05; All models included child age, ethnicity, and family income as covariates; the analyses for inattention and hyperactivity included parental ADHD diagnosis as a covariate and the analyses for oppositional defiant disorder and conduct disorder included parental externalizing disorder diagnoses as covariates.