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Table 2 Impact of bronchodilator in spirometry parameters

From: Airflow limitation: is there a correlation between spirometry and quantitative computed tomography measurements in patients with chronic obstructive pulmonary disease?

FactorsPre (n = 40)Post (n = 40)P$
MeanSDMeanSD
FEV1%57%8%60%7%< 0.001
FVC%92%8%92%10%0.71
FEV1/FVC54%6%56%6%< 0.001
PEF25–75%38%14%40%12%0.04
  1. Continues data represented as (mean ± SD)
  2. SD standard deviation, $ paired t test, FEV1 forced expiratory volume in 1 s, FVC forced volume capacity, PEF25–75 peak expiratory flow at 25–75% level