Table 6.

Symptoms of illicit drug use disorder (excluding marijuana) associated with personality disorder (PD) for each trajectory parameter in comparison to those without PD (N = 749)

Predictor	Mean Level	Linear Age Change	Quadratic Age Change
No PD	0.576**	0.064**	0.003**
In separate models
Paranoid PD	−0.001	0.003	0.000
Schizoid PD	0.073	0.010	0.000
Schizotypal PD	0.084	−0.030	0.003
Borderline PD	0.097*	−0.025*	0.000
Histrionic PD	0.144**	0.010	−0.002
Narcissistic PD	0.101*	0.009	−0.003
Avoidant PD	0.138*	0.002	−0.002
Dependent PD	0.070	−0.007	−0.002
Obsessive-Compulsive PD	0.043	−0.001	0.001
Passive-Aggressive PD	0.041	−0.019	0.003
Conduct Disorder	0.200**	−0.016	0.000
Simultaneous Model of all PDs
Histrionic PD	0.077*
Conduct Disorder	0.154**	−0.020*

Note: All parameter entries are maximum likelihood regression estimates fitted using SAS PROC MIXED and including all covariates. Age was centered by 17. Separate models compare each PD and conduct disorder with the group without PD (n=567). The simultaneous model included all PDs and reports only statistically significant effects of PDs.

^*p < .05;

^**p < .01.