Causes for low positive predictive values of CD4 counts for antiretroviral treatment failure

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چکیده

منابع مشابه

Utility of CD4 cell counts for early prediction of virological failure during antiretroviral therapy in a resource-limited setting

BACKGROUND Viral load monitoring is not available for the vast majority of patients receiving antiretroviral therapy in resource-limited settings. However, the practical utility of CD4 cell count measurements as an alternative monitoring strategy has not been rigorously assessed. METHODS In this study, we used a novel modelling approach that accounted for all CD4 cell count and VL values meas...

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Antiretroviral therapy suppressed participants with low CD4+ T-cell counts segregate according to opposite immunological phenotypes

BACKGROUND The failure to increase CD4 T-cell counts in some antiretroviral therapy suppressed participants (immunodiscordance) has been related to perturbed CD4 T-cell homeostasis and impacts clinical evolution. METHODS We evaluated different definitions of immunodiscordance based on CD4 T-cell counts (cutoff) or CD4 T-cell increases from nadir value (ΔCD4) using supervised random forest cla...

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Antiretroviral Treatment Cohort Analysis Using Time-Updated CD4 Counts: Assessment of Bias with Different Analytic Methods

BACKGROUND Survival analysis using time-updated CD4+ counts during antiretroviral therapy is frequently employed to determine risk of clinical events. The time-point when the CD4+ count is assumed to change potentially biases effect estimates but methods used to estimate this are infrequently reported. METHODS This study examined the effect of three different estimation methods: assuming i) a...

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A comparison of the CD4 response to antiretroviral regimens in patients commencing therapy with low CD4 counts.

OBJECTIVE To compare the immunological response to highly active antiretroviral therapy (HAART) in treatment-naive patients with a baseline CD4 count of <200 cells/mm(3). DESIGN AND METHODS We identified treatment-naive human immunodeficiency virus (HIV-1)-infected individuals who had commenced HAART since 1996 and who had a starting CD4 count of <200 cells/mm(3). Immunological success was de...

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ژورنال

عنوان ژورنال: International Journal of Infectious Diseases

سال: 2008

ISSN: 1201-9712

DOI: 10.1016/j.ijid.2008.02.002