Compared to baseline information from patients with non-ARDS sepsis, patients with ARDS sepsis had a higher prevalence of smoking (P = 0.037), COPD disease (P = 0.005), and respiratory infections (P = 0.002), and elevated levels of CRP (P < 0.001) and PCT (P = 0.006). This evidence concerns the gene CRP and acute respiratory distress syndrome.