Table 4 Comparison of patients with and without inhaled corticosteroid therapy
From: Value of serum and induced sputum surfactant protein-D in chronic obstructive pulmonary disease
COPD patients receiving inhaled steroid (n = 24) | COPD patients not receiving inhaled steroid (n = 16) | p | |
|---|---|---|---|
Serum SP-D (ng/ml) | 132 ± 71 | 99 ± 59 | 0.038 |
Sputum SP-D (ng/ml) | 35.5 ± 14 | 20 ± 7.8 | 0.005 |