Document Detail

Analysis of Cigarette Purchase Task Instrument Data With a Left-Censored Mixed Effects Model.
MedLine Citation:
PMID:  23356731     Owner:  NLM     Status:  Publisher    
The drug purchase task is a frequently used instrument for measuring the relative reinforcing efficacy (RRE) of a substance, a central concept in psychopharmacological research. Although a purchase task instrument, such as the cigarette purchase task (CPT), provides a comprehensive and inexpensive way to assess various aspects of a drug's RRE, the application of conventional statistical methods to data generated from such an instrument may not be adequate by simply ignoring or replacing the extra zeros or missing values in the data with arbitrary small consumption values, for example, 0.001. We applied the left-censored mixed effects model to CPT data from a smoking cessation study of college students and demonstrated its superiority over the existing methods with simulation studies. Theoretical implications of the findings, limitations of the proposed method, and future directions of research are also discussed. (PsycINFO Database Record (c) 2013 APA, all rights reserved).
Wenjie Liao; Xianghua Luo; Chap T Le; Haitao Chu; Leonard H Epstein; Jihnhee Yu; Jasjit S Ahluwalia; Janet L Thomas
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-28
Journal Detail:
Title:  Experimental and clinical psychopharmacology     Volume:  -     ISSN:  1936-2293     ISO Abbreviation:  Exp Clin Psychopharmacol     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-29     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9419066     Medline TA:  Exp Clin Psychopharmacol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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