Volume 123, Issue 6, Pages 1887-1894 (June 2003) Multilevel and Continuous Pleural Fluid pH Likelihood Ratios for Evaluating Malignant Pleural Effusionsa  Heffner John E. , MD, FCCP, Heffner John N. , BA, Brown Lee K. , MD, FCCP  CHEST  Volume 123, Issue 6, Pages 1887-1894 (June 2003) DOI: 10.1378/chest.123.6.1887 Copyright © 2003 The American College of Chest Physicians Terms and Conditions

Figure 1 Multilevel (staircase lines) and continuous (curved lines) likelihood ratios for pleural fluid pH as an estimate of death within 3 months. Horizontal lines mark the likelihood ratio of 1. CHEST 2003 123, 1887-1894DOI: (10.1378/chest.123.6.1887) Copyright © 2003 The American College of Chest Physicians Terms and Conditions

Figure 2 Multilevel (staircase lines) and continuous (curved lines) likelihood ratios for pleural fluid pH as an estimate of failure of pleurodesis. Horizontal lines mark the likelihood ratio of 1. CHEST 2003 123, 1887-1894DOI: (10.1378/chest.123.6.1887) Copyright © 2003 The American College of Chest Physicians Terms and Conditions