Figure 2: Exhaled H2O2 as marker of oxidative stress in HIV-infected patients without signs and symptoms of opportunistic lung disease (OLD-negative) and either HAART-naive or HAART-treated. (A - top) Dot plot of individual results in healthy controls and HIV-1 infected patients. Box plot shows the geometric mean as a solid line and 95% confidence intervals as a rectangle. (B - bottom) Fold increase of geometric mean exhaled H2O2 (H2O2), resting (rCL) and fMLP-induced peak whole blood chemiluminescence (pCL) in OLD-negative patients either HAART-naive or HAART-treated against healthy controls. Raw data vs. adjusted (adj.) for differences in polymorphonuclear leukocytes count (PMNs) among groups with ANCOVA (not applicable for exhaled H2O2 - assumptions not met).