ArticleBrazilian journal of microbiology : [publication of the Brazilian Society for Microbiology]2012
Diagnosis of the pulmonary tuberculosis by polymerase chain reaction: a comparative study between HIV-positive and -negative individuals.
Article in Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology], 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
2 citing papers in PubMed, 2 citations in OpenAlex.
- Urine-Based Nested PCR for the Diagnosis ofJundishapur journal of microbiology · 2016Article
- Evaluation of four molecular methods for the diagnosis of tuberculosis in pulmonary and blood samples from immunocompromised patients.Memorias do Instituto Oswaldo Cruz · 2014Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
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Abstract
This study was performed to assess the efficiency of polymerase chain reaction (PCR) directly from sputum for the diagnosis of pulmonary tuberculosis by comparison between HIV-positive and HIV-negative individuals. Sputum samples were collected from hospitalized patients admitted with a clinical diagnosis of pulmonary tuberculosis, and subjected to smear microscopy, culture on LJ medium and detection of M. tuberculosis by PCR. Sensitivity, specificity, and predictive values (positive and negative) were calculated using smear and/or culture at day 42 as the gold standard, by comparing the yield in HIV-positive and HIV-negative individuals. Regardless of serostatus, the technique's yield had 62% sensitivity, 70% specificity, 79% positive predictive value, 50% negative predictive value, and 65% accuracy. HIV-negative had 64% sensitivity, 74% specificity, 75% positive predictive value, 63% negative predictive value, and 68% accuracy. HIV-positive had 59% sensitivity, 33% specificity, 87% positive predictive value, 10% negative predictive value, and 56% accuracy. The PCR showed a higher yield in HIV-negative individuals compared to HIV-positive individuals.
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Registered trials
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