Factors Affecting Negative Sputum Tests in HIV-TB Patients
Author Information
Author(s): Chartier Loïc, Leng Chanthy, Sire Jean-Marie, Le Minor Odile, Saman Manil, Bercion Raymond, Rahalison Lila, Fontanet Arnaud, Germany Yves, L'Her Pierre, Mayaud Charles, Vray Muriel
Primary Institution: Institut Pasteur, Paris, France
Hypothesis
What factors are associated with negative direct sputum examination among HIV-infected patients with tuberculosis?
Conclusion
The study found that respiratory tract infections and certain clinical features are associated with negative sputum tests in HIV-infected patients with tuberculosis.
Supporting Evidence
- 63% of patients tested positive for AFB in their sputum.
- 92% of patients were at advanced stages of HIV disease.
- Sputum AFB negativity was more frequent in patients with respiratory infections.
Takeaway
Some people with HIV and tuberculosis might not test positive for the bacteria in their sputum because they have other infections or specific symptoms.
Methodology
The study used univariate and multivariate analyses to identify factors associated with negative sputum tests in a multicenter study.
Potential Biases
Potential bias due to the variability in diagnostic methods and patient management across different regions.
Limitations
The study had a relatively small number of AFB-negative patients and some clinical data were unreliable.
Participant Demographics
Most participants were young adults with advanced HIV disease, primarily from Cambodia, Senegal, and Central African Republic.
Statistical Information
P-Value
<0.05
Confidence Interval
95%CI:1.1–7.6
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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