Skip to main content
Figure 1 | Critical Care

Figure 1

From: Biological markers of lung injury before and after the institution of positive pressure ventilation in patients with acute lung injury

Figure 1

Boxplot summary of interleukin (IL)-8 levels (upper panel) and boxplot summary of log-transformed IL-8 levels to achieve normal distribution (lower panel). Median levels of IL-8 were 235 pg/ml (range, 10 to 1,836 pg/ml) pre-intubation, 219 pg/ml (range, 10 to 2,115 pg/ml) immediately post-intubation, and 68 pg/ml (range, 10 to 1,552 pg/ml) at 12 to 26 hours post-intubation. The mean levels of IL-8 after log transformation were 5.2 ± 1.8 pg/ml, 5.5 ± 1.5 pg/ml, and 4.5 ± 1.5 pg/ml, respectively. The decrease in IL-8 level at 12 to 26 hours after intubation was statistically significant (p = 0.002, paired t test with Bonferroni correction for multiple comparisons). The horizontal line represents the median, the box encompasses the 25th to 75th percentile, and error bars encompass the 10th to 90th percentile.

Back to article page