Pneumonia
Latent class analysis useful for diagnosis of pneumococcal pneumonia
Published in TB and Outbreaks Week, June 10th, 2003
According to a study from the United States, "Diagnosis of pneumococcal pneumonia is complicated by the lack of a diagnostic reference standard that is highly sensitive and specific. Latent class analysis (LCA) is a mathematical technique that relates an unobserved ('latent') infection to multiple diagnostic test results by use of a statistical model. We used classical analysis and LCA to evaluate the sensitivity and specificity of blood culture, sputum Gram stain, sputum polymerase chain reaction (PCR), and urine antigen testing for diagnosing pneumococcal pneumonia among 149 adults...
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