Elsevier, Diagnostic Microbiology and Infectious Disease, 2(77), p. 99-100, 2013
DOI: 10.1016/j.diagmicrobio.2013.06.022
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We evaluated the presence of Gram-positive cocci in cluster, seen in Gram-stained smears of cystic fibrosis (CF) sputa versus the microbiological culture for the prediction of the presence of S. aureus. Gram stain provided low accuracy (69.2%; odds ratio, 4.8; 95% confidence interval, 61.3-76.1) for predicting S. aureus in CF sputum.