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. 2015 Jan;52(1):75–87. doi: 10.1165/rcmb.2014-0002OC

Figure 2.

Figure 2.

Predictors of epithelial lining fluid (ELF) volume in smokers. ELF volume from smokers and nonsmokers calculated using (A) urea and (B) protein methods. #P < 0.05. (C) Linear regression model depicting a characteristic of BAL fluid correlated with the level of sRAGE on the x axis and ELF volume on the y axis. Elevated levels of sRAGE correlate with greater volume of ELF regardless of smoking status (P = 0.07). (D) Linear regression model depicting characteristics of BAL fluid from smokers with sRAGE concentration on the x axis and ELF volume on the y axis. Greater concentrations of sRAGE correlated with greater ELF volume in smokers (P = 0.027). There was not a significant correlation between sRAGE and ELF volume in nonsmokers (P = 0.863).