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dc.contributor.authorWillig, James H.
dc.contributor.authorAbroms, Sarah
dc.contributor.authorWestfall, Andrew O.
dc.contributor.authorRoutman, Justin
dc.contributor.authorAdusumilli, Sunil
dc.contributor.authorVarshney, Mohit
dc.contributor.authorAllison, Jeroan J.
dc.contributor.authorChatham, Ashlee
dc.contributor.authorRaper, James L
dc.contributor.authorKaslow, Richard A.
dc.contributor.authorSaag, Michael S.
dc.contributor.authorMugavero, Michael J.
dc.date2022-08-11T08:10:43.000
dc.date.accessioned2022-08-23T17:17:45Z
dc.date.available2022-08-23T17:17:45Z
dc.date.issued2008-09-12
dc.date.submitted2010-08-05
dc.identifier.citationAIDS. 2008 Oct 1;22(15):1951-60. <a href="http://dx.doi.org/10.1097/QAD.0b013e32830efd79">Link to article on publisher's site</a>
dc.identifier.issn0269-9370 (Linking)
dc.identifier.doi10.1097/QAD.0b013e32830efd79
dc.identifier.pmid18784459
dc.identifier.urihttp://hdl.handle.net/20.500.14038/47699
dc.description.abstractINTRODUCTION: Data on initial antiretroviral regimen longevity predates the arrival of newer nucleoside reverse transcriptase inhibitor backbones and once-daily regimens. Modern regimens are thought to possess greater tolerability and convenience. We hypothesized this would translate into greater durability. METHODS: Retrospective study of antiretroviral-naive patients starting treatment at the University of Alabama at Birmingham 1917 HIV/AIDS Clinic 1 January 2000-31 July 2007. Two periods of antiretroviral initiation were identified, prior and after August 2004 (arrival of once-daily fixed-dose regimens). Kaplan-Meier survival analyses of regimen durability by time period and regimen characteristics were performed. Staged Cox proportional hazards models evaluated the roles of dosing complexity and composition in explaining differences in regimen durability between study periods. RESULTS: Overall 542 patients started antiretroviral drugs (n = 309, January 2000-July 2004; n = 233, August 2004-July 2007). Median durability was 263 days longer in after August 2004 regimens. Regimens started before August 2004 had increased hazards for discontinuation relative to after August 2004 regimens [hazard ratio (HR) = 1.44; 95% confidence interval (CI) = 1.03-2.02]. Time period of initiation lost statistical significance when the model included dosing frequency (HR = 1.92 for at least twice daily vs. daily; 95% CI = 1.29-2.88). As regimen composition variables were added, time period and dosing frequency lost significance. Increased hazards of discontinuation were observed with didanosine or stavudine relative to abacavir or tenofovir use (HR = 1.92; 95% CI = 1.29-2.88) and all third drugs compared with non-nucleoside reverse transcriptase inhibitor-based regimens (triple-nucleoside reverse transcriptase inhibitor HR = 1.76; 95% CI = 1.14-2.73; unboosted-protease inhibitor HR = 1.58; 95% CI = 1.02-2.46; boosted-protease inhibitor HR = 1.57; 95% CI = 1.02-2.41). Affective mental health disorders increased the hazard of discontinuation in all models. CONCLUSION: Durability of contemporary once-daily fixed-dose antiretroviral regimens has significantly eclipsed the duration of earlier antiretroviral drug options. Our results indicate this is due to both more convenient dosing and improved tolerability of modern antiretroviral regimens.
dc.language.isoen_US
dc.relation<a href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&list_uids=18784459&dopt=Abstract">Link to Article in PubMed</a>
dc.relation.urlhttp://dx.doi.org/10.1097/QAD.0b013e32830efd79
dc.subjectAdult
dc.subjectAnti-HIV Agents
dc.subjectAntiretroviral Therapy, Highly Active
dc.subjectCD4 Lymphocyte Count
dc.subjectDrug Administration Schedule
dc.subjectEpidemiologic Methods
dc.subjectFemale
dc.subjectHIV Infections
dc.subjectHIV Protease Inhibitors
dc.subjectHumans
dc.subjectMale
dc.subjectMiddle Aged
dc.subjectReverse Transcriptase Inhibitors
dc.subjectBioinformatics
dc.subjectBiostatistics
dc.subjectEpidemiology
dc.subjectHealth Services Research
dc.titleIncreased regimen durability in the era of once-daily fixed-dose combination antiretroviral therapy
dc.typeJournal Article
dc.source.journaltitleAIDS (London, England)
dc.source.volume22
dc.source.issue15
dc.identifier.legacycoverpagehttps://escholarship.umassmed.edu/qhs_pp/823
dc.identifier.contextkey1426297
html.description.abstract<p>INTRODUCTION: Data on initial antiretroviral regimen longevity predates the arrival of newer nucleoside reverse transcriptase inhibitor backbones and once-daily regimens. Modern regimens are thought to possess greater tolerability and convenience. We hypothesized this would translate into greater durability.</p> <p>METHODS: Retrospective study of antiretroviral-naive patients starting treatment at the University of Alabama at Birmingham 1917 HIV/AIDS Clinic 1 January 2000-31 July 2007. Two periods of antiretroviral initiation were identified, prior and after August 2004 (arrival of once-daily fixed-dose regimens). Kaplan-Meier survival analyses of regimen durability by time period and regimen characteristics were performed. Staged Cox proportional hazards models evaluated the roles of dosing complexity and composition in explaining differences in regimen durability between study periods.</p> <p>RESULTS: Overall 542 patients started antiretroviral drugs (n = 309, January 2000-July 2004; n = 233, August 2004-July 2007). Median durability was 263 days longer in after August 2004 regimens. Regimens started before August 2004 had increased hazards for discontinuation relative to after August 2004 regimens [hazard ratio (HR) = 1.44; 95% confidence interval (CI) = 1.03-2.02]. Time period of initiation lost statistical significance when the model included dosing frequency (HR = 1.92 for at least twice daily vs. daily; 95% CI = 1.29-2.88). As regimen composition variables were added, time period and dosing frequency lost significance. Increased hazards of discontinuation were observed with didanosine or stavudine relative to abacavir or tenofovir use (HR = 1.92; 95% CI = 1.29-2.88) and all third drugs compared with non-nucleoside reverse transcriptase inhibitor-based regimens (triple-nucleoside reverse transcriptase inhibitor HR = 1.76; 95% CI = 1.14-2.73; unboosted-protease inhibitor HR = 1.58; 95% CI = 1.02-2.46; boosted-protease inhibitor HR = 1.57; 95% CI = 1.02-2.41). Affective mental health disorders increased the hazard of discontinuation in all models.</p> <p>CONCLUSION: Durability of contemporary once-daily fixed-dose antiretroviral regimens has significantly eclipsed the duration of earlier antiretroviral drug options. Our results indicate this is due to both more convenient dosing and improved tolerability of modern antiretroviral regimens.</p>
dc.identifier.submissionpathqhs_pp/823
dc.contributor.departmentDepartment of Quantitative Health Sciences
dc.source.pages1951-60


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