Julius Centre University of Malaya, Department of Social and Preventive Medicine, Faculty of Medicine, University of Malaya, Malaysia.
Prev Med. 2013;57 Suppl:S34-6. doi: 10.1016/j.ypmed.2013.01.002. Epub 2013 Jan 11.
The aim of the study was to determine how well self-reported adherence fares compared to therapeutic drug monitoring in monitoring HAART adherence.
We administered a validated self-reported adherence (SRA) questionnaire to 925 HIV patients on HAART in a large Malaysian hospital from 2010 to 11. We also performed Therapeutic Drug monitoring (TDM) by concurrently collecting and testing blood samples for Efavirenz, Nevirapine and Lamivudine using Liquid Chromatography/Mass Spectrometry. We compared the SRA against the TDM results. Sensitivity, specificity, positive (PPV) and negative predictive (NPV) and diagnostic accuracy values were computed for each drug.
Self-reported adherence (SRA) over-estimates adherence by between 6 and 10 percentage points compared to therapeutic drug monitoring (TDM). SRA is highly sensitive with sensitivity exceeding 0.90 but is not very specific (0.56-0.63). PPV for SRA ranged between 0.76 (Lamivudine) and 0.84 (Efavirenz) while NPV ranged between 0.78 (Lamivudine) and 0.81 (Efavirenz). Overall diagnostic accuracy ranged between 0.76 (Lamivudine) and 0.84 (Nevirapine).
Self-reported adherence is a surprisingly accurate instrument for measuring HAART adherence compared to TDM and can be reliably used in practice in resource-poor settings.
本研究旨在比较自我报告的依从性与治疗药物监测(therapeutic drug monitoring,TDM)在监测高效抗逆转录病毒治疗(highly active antiretroviral therapy,HAART)依从性方面的表现。
我们在 2010 年至 2011 年期间,对马来西亚一家大型医院的 925 名接受 HAART 的 HIV 患者进行了一项经过验证的自我报告依从性(self-reported adherence,SRA)问卷评估,并同时采集和检测了依非韦伦、奈韦拉平、拉米夫定的血药浓度,采用液相色谱/质谱法进行了 TDM。我们将 SRA 与 TDM 结果进行了比较。计算了每种药物的敏感性、特异性、阳性预测值(positive predictive value,PPV)、阴性预测值(negative predictive value,NPV)和诊断准确性值。
与 TDM 相比,自我报告的依从性(SRA)高估了 6%至 10%的依从性。SRA 具有很高的敏感性,敏感性超过 0.90,但特异性不高(0.56-0.63)。SRA 的 PPV 范围为 0.76(拉米夫定)至 0.84(依非韦伦),NPV 范围为 0.78(拉米夫定)至 0.81(依非韦伦)。总体诊断准确性范围为 0.76(拉米夫定)至 0.84(奈韦拉平)。
与 TDM 相比,自我报告的依从性是一种测量 HAART 依从性的令人惊讶的准确工具,在资源匮乏的环境中可以可靠地用于实践。