highly significantp = 1.01 × 10 −5
In DHLF-COPD the Mann-Whitney U test showed a highly significant difference in distributions (U = 41246, p = 1.01 × 10 −5 ) and Mood’s Median Test confirmed a significant difference in medians (χ 2 = 15.82, p = 7 × 10 −5 ) comparing control and treatment group while in NHLF no significant correlation could be detected (Fig. 6 A).