BACKGROUND: Medication adherence plays a significant in the success of combination antiretroviral therapy (cART). Therefore, the current investigation was conducted with the objective of comparing adherence and CD4 cell count with respect to virologic failure among HIV-infected adults under cART. METHODS: A retrospective study design was conducted on 792 randomly selected HIV-infected adult patients who initiated first-line cART enrolled in the first 10 months of 2012 and followed up to August 2018 by using a simple random sampling technique based on their identification number. RESULTS: The main outcome for the current investigation was the virologic failure which was decreased with successive visits. The area under the receiver operating characteristic curve for adherence and CD4 cell count change were 0.68 and 0.63 with χ 2 = 21.2; p-value <0.001 for the 12-month assessment. Similarly, these areas for the 36th and 60th month assessments were 0.71 and 0.66, with χ 2 = 23.2; p-value <0.001, and 0.73 and 0.71 with χ 2 = 24.3; p-value <0.001 for adherence and CD4 cell count, respectively. CONCLUSION: Pill count adherence was more accurate compared to CD4 cell count change for assessing virologic responses. Therefore, because of its easy access, simple use, cost-effectiveness, and accuracy, the adherence to cART was in favor of CD4 cell count change for monitoring the healthcare quality of HIV-infected patients.
BACKGROUND: Medication adherence plays a significant in the success of combination antiretroviral therapy (cART). Therefore, the current investigation was conducted with the objective of comparing adherence and CD4 cell count with respect to virologic failure among HIV-infected adults under cART. METHODS: A retrospective study design was conducted on 792 randomly selected HIV-infected adult patients who initiated first-line cART enrolled in the first 10 months of 2012 and followed up to August 2018 by using a simple random sampling technique based on their identification number. RESULTS: The main outcome for the current investigation was the virologic failure which was decreased with successive visits. The area under the receiver operating characteristic curve for adherence and CD4 cell count change were 0.68 and 0.63 with χ 2 = 21.2; p-value <0.001 for the 12-month assessment. Similarly, these areas for the 36th and 60th month assessments were 0.71 and 0.66, with χ 2 = 23.2; p-value <0.001, and 0.73 and 0.71 with χ 2 = 24.3; p-value <0.001 for adherence and CD4 cell count, respectively. CONCLUSION: Pill count adherence was more accurate compared to CD4 cell count change for assessing virologic responses. Therefore, because of its easy access, simple use, cost-effectiveness, and accuracy, the adherence to cART was in favor of CD4 cell count change for monitoring the healthcare quality of HIV-infected patients.
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