Improving self-reports of drug-use: numeric estimates as fuzzy sets.

AIMS: This study compared traditional crisp set to fuzzy set representations of quantitative estimates of drug use to investigate what survey respondents recall about their drug use. DESIGN: Sample survey comparing (a) responses to traditional survey questions asking for single numeric estimates to...

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Bibliographic Details

Published in:	Addiction Vol. 98; no. 9; pp. 1239 - 1248
Main Authors:	Matt GE, Turingan MR, Dinh QT, Felsch JA, Hovell MF, Gehrman C
Format:	research tables/charts Journal Article
Published:	Wiley-Blackwell Sep2003
Online Access:	View this record in EBSCOhost