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Glass, T R; Battegay, M; Cavassini, M; De Geest, S; Furrer, H; Vernazza, P L; Hirschel, B; Bernasconi, E; Rickenbach, M; Günthard, H F; Bucher, H C (2010). Longitudinal analysis of patterns and predictors of changes in self-reported adherence to antiretroviral therapy: Swiss HIV Cohort Study. JAIDS Journal of Acquired Immune Deficiency Syndromes, 54(2):197-203.

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BACKGROUND:: Adherence to combination antiretroviral therapy (cART) is a dynamic process, however, changes in adherence behavior over time are insufficiently understood. METHODS:: Data on self-reported missed doses of cART was collected every 6 months in Swiss HIV Cohort Study participants. We identified behavioral groups associated with specific cART adherence patterns using trajectory analyses. Repeated measures logistic regression identified predictors of changes in adherence between consecutive visits. RESULTS:: Six thousand seven hundred nine individuals completed 49,071 adherence questionnaires [median 8 (interquartile range: 5-10)] during a median follow-up time of 4.5 years (interquartile range: 2.4-5.1). Individuals were clustered into 4 adherence groups: good (51.8%), worsening (17.4%), improving (17.6%), and poor adherence (13.2%). Independent predictors of worsening adherence were younger age, basic education, loss of a roommate, starting intravenous drug use, increasing alcohol intake, depression, longer time with HIV, onset of lipodystrophy, and changing care provider. Independent predictors of improvements in adherence were regimen simplification, changing class of cART, less time on cART, and starting comedications. CONCLUSIONS:: Treatment, behavioral changes, and life events influence patterns of drug intake in HIV patients. Clinical care providers should routinely monitor factors related to worsening adherence and intervene early to reduce the risk of treatment failure and drug resistance.


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54 citations in Scopus®
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Additional indexing

Contributors:Swiss HIV Cohort Study
Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic for Infectious Diseases
Dewey Decimal Classification:610 Medicine & health
Date:June 2010
Deposited On:20 Jan 2010 11:48
Last Modified:05 Apr 2016 13:47
Publisher:Lippincott Wiliams & Wilkins
Publisher DOI:10.1097/QAI.0b013e3181ca48bf
PubMed ID:20035231

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