Reliability of Homeless Women’s Reports: Concordance Between Hair Assay and Self Report of Cocaine Use

BACKGROUNDTo assess the concordance of homeless women’s self-reported drug use with objective data. OBJECTIVETo determine whether objective data (e.g., hair assays) are necessary supplements to self reports in assessing homeless women’s cocaine use. METHODSelf reports of cocaine use by 1,037 homeles...

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