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Table 2 Levels of IL-8, TNF-α, NE and SLPI in sputum supernatants before and with acquisition of M catarrhalis (p values by Wilcoxon matched pairs rank test).

From: Moraxella catarrhalisacquisition, airway inflammation and protease-antiprotease balance in chronic obstructive pulmonary disease

  Pre-acquisition Median
(Interquartile range)
Acquisition Median
(Interquartile range)
p value
IL-8 ng/ml 2.11 (5.09) 4.74 (17.5) <0.001
TNF-α ng/ml 0 (0.02) 0.05 (0.15) <0.001
NE nM/ml 0.12 (0.2) 8.42 (76.55) <0.001
SLPI μg/ml 35.6 (47.75) 10.84 (24.19) <0.001