Table 2

Area under the curve (AUC) for the various test criteria (Wilcoxon estimate)

Criteria AUC 95% CI
FLDH0.890.86 to 0.96
TPR0.860.80 to 0.91
LDHR0.820.77 to 0.89
FLDH + TPR0.900.86 to 0.95
  • FLDH = pleural fluid absolute lactic dehydrogenase; TPR = pleural fluid to serum ratio of total protein; LDHR = pleural fluid to serum ratio of LDH.