21779253

Source:http://linkedlifedata.com/resource/pubmed/id/21779253

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Predicate	Object
rdf:type	pubmed:Citation
lifeskim:mentions	umls-concept:C0008976, umls-concept:C0022417, umls-concept:C0032659, umls-concept:C0034656, umls-concept:C0185125, umls-concept:C0308269, umls-concept:C0449432, umls-concept:C0870071, umls-concept:C1179435, umls-concept:C1524073, umls-concept:C1537021, umls-concept:C1548799, umls-concept:C1705248
pubmed:dateCreated	2011-7-22
pubmed:abstractText	The HIV risk-taking behavior scale (HRBS) is an 11-item instrument designed to assess the risks of HIV infection due to self-reported injection-drug use and sexual behavior. A retrospective analysis was performed on HRBS data collected from approximately 1,000 participants pooled across seven clinical trials of pharmacotherapies for either the treatment of cocaine dependence or methamphetamine dependence. Analysis faced three important challenges. The sample contained a high proportion of missing assessments after randomization. Also, the HRBS scale consists of two distinct behavioral components which may or may not coincide in response patterns. In addition, distributions of responses on the subscales were highly concentrated at just a few values (e.g., 0, 6). To address these challenges, a single probit regression model was fit to three outcomes variables simultaneously - the two subscale totals plus an indicator variable for assessments not obtained (non-response). This joint-outcome regression model was able to identify that those who left assessment early had higher self-reported risk of injection-drug use and lower self-reported risky sexual behavior because the model was able to draw on information on associations among the three outcomes collectively. These findings were not identified in analyses performed on each outcome separately. No evidence for an effect of pharmacotherapies was observed, except to reduce missing assessments. Univariate-outcome modeling is not recommended for the HRBS.
pubmed:commentsCorrections	http://linkedlifedata.com/resource/pubmed/commentcorrection/21779253-11758820, http://linkedlifedata.com/resource/pubmed/commentcorrection/21779253-18817968, http://linkedlifedata.com/resource/pubmed/commentcorrection/21779253-19414226, http://linkedlifedata.com/resource/pubmed/commentcorrection/21779253-19560290, http://linkedlifedata.com/resource/pubmed/commentcorrection/21779253-2031690, http://linkedlifedata.com/resource/pubmed/commentcorrection/21779253-20425564, http://linkedlifedata.com/resource/pubmed/commentcorrection/21779253-20658547, http://linkedlifedata.com/resource/pubmed/commentcorrection/21779253-21045597, http://linkedlifedata.com/resource/pubmed/commentcorrection/21779253-3283549, http://linkedlifedata.com/resource/pubmed/commentcorrection/21779253-7569492, http://linkedlifedata.com/resource/pubmed/commentcorrection/21779253-9928733
pubmed:language	eng
pubmed:journal	http://linkedlifedata.com/resource/pubmed/journal/101545006
pubmed:status	PubMed-not-MEDLINE
pubmed:issn	1664-0640
pubmed:author	pubmed-author:AndersonAnn LAL, pubmed-author:ElkashefAhmed MAM, pubmed-author:HolmesTyson HTH, pubmed-author:LiShou-HuaSH
pubmed:issnType	Electronic
pubmed:volume	2
pubmed:owner	NLM
pubmed:authorsComplete	Y
pubmed:pagination	41
pubmed:year	2011
pubmed:articleTitle	Advantages of Joint Modeling of Component HIV Risk Behaviors and Non-Response: Application to Randomized Trials in Cocaine-Dependent and Methamphetamine-Dependent Populations.
pubmed:affiliation	Division of Sleep Medicine, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine Stanford, CA, USA.
pubmed:publicationType	Journal Article