nearly significantp = 0.086
Correlation between FeNO and ACT During the follow-up visits, the Wilcoxon rank-sum test revealed significant changes in the FeNO levels in the control group and the FeNO ≤ 40 ppb group, with p values < 0.05 in all cases, with the results in the FeNO ≤ 40 ppb group being nearly significant ( p = 0.086) only at V-5 (Table 4 and Fig. 4 ).