From: Blood and sputum eosinophilia in COPD exacerbation
Steroid source
N
E in blood
E in sputum
Mean
SD
Refused treatment
17
6.54
2.96
7.02
4.61
Steroid use
83
3.22
2.97
3.09
3.8
P$
< 0.001
0.004