Cognitive Impairment in Opium Use Disorder

Table 4

Partial correlation (controlling for age and education) between clinical characteristics and neuropsychological scores in opium users.

	AVLT-R-	AVLT-R- to	AVLT-R-interfered recall	AVLT-R-delayed recall	AVLT-R learning	AVLT-R forgetting	AVLT-R percent forgetting	BVMT-R-total recall	BVMT-R-delayed recall	BVMT-R-learning	DFT	DBT	DSST
Duration of use	-0.158	0.035	0.118	-0.110	0.261	0.258	0.256	-0.319	-0.122	-0.034	-0.240	-0.483	-0.542
Opium use quantity	-0.136	-0.055	-0.079	0.048	0.135	-0.001	0.019	0.088	0.069	0.130	-0.258	-0.385	-0.113

; . AVLT-R: Auditory Verbal Learning Test-Revised; BVMT-R: Brief Visuospatial Memory Test-Revised; DFT: Digit Forward Test; DBT: Digit Backward Test; DSST: Digit Symbol Substitution Test.