Figure 1.
Serum cytokine levels in irritable bowel syndrome (IBS) and healthy controls are shown. Modified boxplots of serum cytokine levels (pg/ml) in male and female IBS patients and healthy controls within males (a) and females (b) are shown. The horizontal line indicates the median value and the lower and upper brackets indicate the 25th percentile—1.5 interquartile range (IQR) and 75th percentile + IQR, respectively. The open circles represent values outside of the bracket range and are potential outliers. There were no significant differences between IBS patients and controls. TNF, tumor necrosis factor.