MRSA surveillance cultures as a predictor of MRSA infection by anatomical site.

<p><b>A.</b> ROC curve of MRSA surveillance as a predictor of overall MRSA infection. AUC: nasal cultures, 0.648 (95% CI, 0.590-0.704); trachea/throat cultures, 0.675 (95% CI, 0.617-0.729); all 4 sites, 0.706 (95% CI, 0.649-0.759) (<i>P</i>>0.05). <b>B.</b> ROC curve of MRSA surveillance as a predictor of MRSA pneumonia. AUC: nasal cultures, 0.649 (95% CI, 0.590-0.705); trachea/throat cultures, 0.791 (95% CI, 0.739-0.837); all 4 sites, 0.748 (95% CI, 0.693-0.797).