Optimal Allocation of Gold Standard Testing under Constrained Availability: Application to Assessment of HIV Treatment Failure.

Optimal Allocation of Gold Standard Testing under Constrained Availability: Application to Assessment of HIV Treatment Failure.
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DOI:
10.1080/01621459.2013.810149
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发表时间:
2013-01-01
影响因子:
3.7
通讯作者:
Kantor R
Kantor R
中科院分区:
数学1区
文献类型:
--
作者:
Liu T;Hogan JW;Wang L;Zhang S;Kantor R

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世界卫生组织(WHO)关于监测资源有限环境中艾滋病毒治疗有效性的指南(RLS)主要基于临床和免疫学标志物(例如,CD4细胞计数)。最近的研究表明,这些准则是不够的,可能导致高错误率。病毒载量(VL)被认为是“黄金标准”,但其广泛使用受到成本和基础设施的限制。在本文中,我们提出了一种诊断算法,使用信息收集的临床和免疫学标志物,以指导选择性使用VL检测诊断艾滋病毒治疗失败,假设VL检测仅在一定部分的患者就诊。我们的算法识别患者亚群,使得对他们使用有限的VL测试最小化预定义的风险(例如,误诊率)。我们的建议算法的诊断性能进行评估模拟。为了说明,分析来自Miriam Hospital Immunology Clinic(RI,USA)的数据。
The World Health Organization (WHO) guidelines for monitoring the effectiveness of HIV treatment in resource-limited settings (RLS) are mostly based on clinical and immunological markers (e.g., CD4 cell counts). Recent research indicates that the guidelines are inadequate and can result in high error rates. Viral load (VL) is considered the “gold standard”, yet its widespread use is limited by cost and infrastructure. In this paper, we propose a diagnostic algorithm that uses information from routinely-collected clinical and immunological markers to guide a selective use of VL testing for diagnosing HIV treatment failure, under the assumption that VL testing is available only at a certain portion of patient visits. Our algorithm identifies the patient sub-population, such that the use of limited VL testing on them minimizes a pre-defined risk (e.g., misdiagnosis error rate). Diagnostic properties of our proposal algorithm are assessed by simulations. For illustration, data from the Miriam Hospital Immunology Clinic (RI, USA) are analyzed.
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