Table 4: Sputum cell comparison at AECOPD according to the stage of diseases.

Cell structure Means ± Std. Deviation stage IV Means ± Std. Deviation stage III Comparisons of means (t-test)
Nr of sputum cells 16.77 ± 4.18 12.2 ± 3.63 P = 0.0001
Eosinophils [%] 0.62 ± 1.23 1.02 ± 1.4 P = 0.26
Neutrophils [%] 54.77 ± 10.10 48.7 ± 9.59 P = 0.024
Macrophage [%] 31.62 ± 1.17 34.51 ± 6.9 P = 0.66
Lymphocytes [%] 6.28 ± 2.52 7.1 ± 2.95 P = 0.27
Epithelial cells [%] 7.31 ± 3.95 7.57 ± 3.23 P = 0.79