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Table 3 Correlation between blood and sputum eosinophils in COPD and asthmatic subjects divided according to median blood eosinophil value (both percentage and count)

From: Do blood eosinophils strictly reflect airway inflammation in COPD? Comparison with asthmatic patients

  rho (p-value) rho (p-value)
COPD Blood eosinophils < 2.9% Blood eosinophils ≥2.9%
Blood eosinophils % and sputum eosinophils % 0.24 (0.22) 0.12 (0.53)
Blood eosinophils count and sputum eosinophils % 0.17 (0.40) 0.05 (0.78)
COPD Blood eosinophils count < 210.6 Blood eosinophils count ≥210.6
Blood eosinophils % and sputum eosinophils % 0.45 (0.02)* 0.18 (0.35)
Blood eosinophils count and sputum eosinophils % 0.35 (0.07) 0.16 (0.42)
Asthma Blood eosinophils < 3.6% Blood eosinophils ≥3.6%
Blood eosinophils % and sputum eosinophils % 0.36 (0.02)* 0.37 (0.01)*
Blood eosinophils count and sputum eosinophils % 0.35 (0.02)* 0.37 (0.01)*
Asthma Blood eosinophils count < 238.5 Blood eosinophils count ≥238.5
Blood eosinophils % and sputum eosinophils % 0.40 (0.007)* 0.48 (0.0007)*
Blood eosinophils count and sputum eosinophils % 0.28 (0.06) 0.48 (0.001)*
  1. * P < 0.05