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Table 2 Airway responsiveness to methacholine, DI index and number of coughs for 32 min during and following the inhalationof methacholine

From: Bronchodilator effect of deep inspiration and bronchoconstriction-triggered cough

Airway responsiveness  
   PC20-FEV1 71.6 (GSEM, 1.28) mg/ml
   PC35-MEF40 21.1 (GSEM, 1.28) mg/ml
   PC35-PEF40 6.22 (GSEM, 1.27) mg/ml
After inhalation of PC20-FEV1 concentration of methacholine  
   Percent decrease in FEV1 from the baseline value 22.0 ± 9.0%
   Percent decrease in MEF40 from the baseline value 53.4 ± 20.8%
   Percent decrease in PEF40 from the baseline value 63.0 ± 18.2%
   (MEF40-PEF40)/PEF40 ratio (DI index) 0.41 ± 0.39
   Number of coughs 39.3 ± 29.7/32 min