Contrasts between admitters and deniers of drug use

This study evaluated the agreement between self-reported drug use and urina lysis results in 232 men and 27 women opiate-dependent patients at 2, 7, an d 24 months following admission to methadone maintenance treatment. Differe nces between deniers, those who stated that they had not used drugs, but wh ose urinalysis results were positive, and admitters of drug use on several psychosocial variables, Axis I and II pathology and degree of psychopathy w ere examined. Generally, more drug use was acknowledged by self-report than found in urinalyses. Evidence was limited that deniers were consistently d ifferent than admitters. Deniers had a significantly greater increase from initial psychopathy ratings made using interview only information to final psychopathy ratings made utilizing interview and collateral information. (C ) 2000 Elsevier Science Inc. All rights reserved.