The first question to ask in assessing a patient with a pleural effusion is whether that effusion is a transudate or an exudate by using Light's criteria (1).
Pleural fluid samples were evaluated by Light's criteria and new formulas.
The Light's criteria were used in order to obtain a diagnosis of exudative pleural effusion (1).
ROCs analysis and AUCs were carried out to determine the discriminative ability of Light's criteria and new adapted formulas of exudative and transudative pleural effusions.
The mean, standard deviation, confidence interval (95%) of exudates and transudates, as well as the comparison results of Light's criteria and three adapted formulas are shown in Table 2.
Comparison of the pleural fluid data classified as transudates and exudates using Light's criteria and the newly adaoted formulas EXUDATES TRANSUDATES P X [+ or -] SD X [+ or -] SD Light's Criteria (LC) LC-1 0.
AUCs of Light's criteria (P/Sprot, P/SLDH, PLDH) were found to be significantly different and calculated as (p<.
The AUCs of those formulas indicated that the success of discrimination of transudates from exudates in pleural fluids by them was significantly high than the Light's criteria.