Study characteristics |
Patient Sampling |
Adult HIV‐positive patients at Polana Caniço Health Centre, Maputo, Mozambique, were invited to participate in the study. Only consenting patients were included in the study. In order to include patients with viral loads throughout all ranges (undetectable, detectable to 10,000 copies/mL, and greater than 10,000 copies/mL), patients were targeted for representation in those 3 ranges based on the following clinical information: on ART for longer than 6 months, on ART for between 4 weeks and 6 months, and on for ART less than 4 weeks, respectively. This clinic was selected based on its proximity to the HIV reference laboratory in Maputo and to facilitate study management and sample logistics. Eligibility criteria included age over 18 years, documented HIV infection, and receipt of ART. Exclusion criteria included any serious medical conditions that could disrupt the accuracy of normal laboratory testing and its interpretation; however, no participants met this criterion. There was no exclusion on grounds of gender, socioeconomic status, race, or ethnicity. |
Patient characteristics and setting |
Adult HIV‐positive patients on ART; peri‐urban health centre in Maputo, Mozambique. |
Index tests |
Alere Q NAT POC viral load technology (Alere Technologies, Jena, Germany) on fresh whole blood samples (capillary) at point of care. |
Target condition and reference standard(s) |
HIV viral load total HIV RNA (HIV‐1/2 RNA); > 1000 copies/mL and > 5000 copies/mL; Roche COBAS AmpliPrep/COBAS TaqMan v2. |
Flow and timing |
Viral load testing was performed within 1 week of sample collection. |
Comparative |
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Notes |
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Methodological quality |
Item |
Authors' judgement |
Risk of bias |
Applicability concerns |
DOMAIN 1: Patient Selection |
Was a consecutive or random sample of patients enrolled? |
Unclear |
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Was a case‐control design avoided? |
Yes |
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Did the study avoid inappropriate exclusions? |
Yes |
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Could the selection of patients have introduced bias? |
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Unclear risk |
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Are there concerns that the included patients and setting do not match the review question? |
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Low concern |
DOMAIN 2: Index Test (All tests) |
Were the index test results interpreted without knowledge of the results of the reference standard? |
Yes |
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If a threshold was used, was it pre‐specified? |
Yes |
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Could the conduct or interpretation of the index test have introduced bias? |
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Low risk |
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Are there concerns that the index test, its conduct, or interpretation differ from the review question? |
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Low concern |
DOMAIN 3: Reference Standard |
Is the reference standards likely to correctly classify the target condition? |
Yes |
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Were the reference standard results interpreted without knowledge of the results of the index tests? |
Yes |
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Could the reference standard, its conduct, or its interpretation have introduced bias? |
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Low risk |
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Are there concerns that the target condition as defined by the reference standard does not match the question? |
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Low concern |
DOMAIN 4: Flow and Timing |
Was there an appropriate interval between index test and reference standard? |
Yes |
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Did all patients receive the same reference standard? |
Yes |
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Were all patients included in the analysis? |
Yes |
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Could the patient flow have introduced bias? |
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Low risk |
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