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Table 5 Relative FEV 1 decline in % predicted during sputum induction

From: Comparison of inflammatory markers in induced and spontaneous sputum in a cohort of COPD patients

  Exacerbations Steady state p*
  n = 63 n = 390  
    0.004
Median (IQR) 12.64(5.56-21.79) 18.75(11.11-25)  
Mean (SD) 14.80(13.05) 18.51(11.44)  
  1. *Wilcoxon sign rank test.