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Table 4 Correlation between the “E” level in blood and sputum with steroid treatment

From: Blood and sputum eosinophilia in COPD exacerbation

Steroid source

N

E in blood

E in sputum

Mean

SD

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

  1. $Independent t test, P considered significant if < 0.05