ROC curve analysis of independent predictors for lymphocytopenia and bacterial infections.

<p>(<b>A</b>) ROC curve performance of the independent variables age and NIHSSS for relative lymphocytopenia on admission (day1). (<b>B</b>) ROC curves of the independent predictors of bacterial infections as detected by multivariate regression analysis. NIHSSS and lymphocytes on admission (day 1) and mechanical ventilation and PCT during the first week. Lymphocytes were plotted as probabilities to avoid curve inversion by the negative correlation. (<b>C</b>) Analysis of ROC performance for the combined predictive variables available on admission. AUC: area under the curve.