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...
| Publicado en: | Addiction Vol. 98; no. 9; pp. 1239 - 1248 |
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| Autores principales: | , , , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Wiley-Blackwell
Sep2003
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=106710930&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 106710930 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 09652140 AIO jtl: Addiction issn: 09652140 maglogo: Y pubinfo: dt: Sep2003 vid: 98 iid: 9 pid: 480 pub: Wiley-Blackwell place: Malden, Massachusetts artinfo: ui: 106710930 106710930 2004043157 10.1046/j.1360-0443.2003.00444.x NLM12930211 106710930 ppf: 1239 ppct: 9 formats: fmt: @attributes: type: P tig: atl: Improving self-reports of drug-use: numeric estimates as fuzzy sets. aug: au: Matt GE Turingan MR Dinh QT Felsch JA Hovell MF Gehrman C affil: Department of Psychology, San Diego State University, San Diego, CA 92182-4611; gmatt@sciences.sdsu.edu sug: subj: Self Report Methods Substance Abuse Adult Alcohol Drinking Amphetamines Analysis of Variance California Cannabis Data Analysis Software Female Funding Source Interviews Male Middle Age Multiple Regression Test-Retest Reliability Tobacco Human Adult: 19-44 years Middle Aged: 45-64 years Female Male ab: 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 (b) responses to fuzzy set questions asking for boundary estimates of drug use. SETTING: Research facilities of a public university in a large southern California city. PARTICIPANTS: Community residents using tobacco, alcohol, marijuana or amphetamine (n = 88). MEASUREMENTS: Personal interviews in which participants reported onset, frequency and daily rate of tobacco, alcohol, marijuana and amphetamine use based on traditional survey questions and fuzzy set questions. FINDINGS: With the exception of marijuana use, fuzzy boundary estimates differed significantly from the traditional point estimates (P < 0.05). Median retest reliabilities for fuzzy boundary estimates were 0.96 (tobacco), 0.81 (alcohol), 0.96 (marijuana) and 0.95 (amphetamine). The degree of vagueness varied by behavior and drug, with estimates of daily rates showing greatest fuzziness and onset of use showing least fuzziness. CONCLUSIONS: Participants recall more about past drug use than a single numeric estimate. All numeric estimates of drug use showed fuzzy set properties. Compared to traditional self-reports of drug use, fuzzy set representations provide a more complete and detailed description of what participants recall about past drug use. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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