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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
  1. The results were expressed as mean ± standard deviation.
  2. COPD Chronic obstructive pulmonary disease, SP-D surfactant protein D.