Circulating Extracellular Vesicles Are Associated with Disease Severity and Interleukin-6 Levels in COPD: A Pilot Study.

In Table 2 , we reported the results of cardiac and inflammatory markers in the four groups: we did not find any significant differences (including in routine blood biochemistry, data not shown) except for IL-6, which shows a significant trend for increasing levels from group A to D ( p for trend <0.05, by Jonckheere–Terpstra test, Table 2 ).

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