The association of both self-reported and behavioral impulsivity with the annual prevalence of substance use among early adolescents

Table 1 Distribution of variables of the overall sample and males and females scores comparison

Variable	Total (n = 1348)	Males (n = 716)	Females (n = 632)	p-value
BIS-11-A (median)	39^**	37	40	.005^†
ImpSS (median)	9^**	9	9	.457^†
Stroop (median)	1^**	1	1	.001^†
AUC (median)	.1549^**	0.1582	0.1504	.925^†
Log K (mean ± SD)	−2.19 ± 1.10	−2.22 ± 1.10	−2.15 ± 1.11	.281^‡

^** p ≤ .001 significant level in Kolmogorov-Smirnov normality test; p-value column corresponds to comparisons between males and females; ^† Mann–Whitney test; ^‡ t-test; SD standard deviation; BIS: Barrat Impulsivity Scale; ImpSS: Impulsive Sensation Seeking; Stroop: number of errors in Stroop test; AUC: Area Under the Curve in Delay Discounting

ISSN: 1747-597X