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Table 1 Patient’s characteristics

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

FactorsTotal (n = 40)
 MeanSDMinimumMaximum
Age61.138.114081
Pre-bronchodilator (%)
 FEV157%8%44%79%
 FVC92%8%80%108%
 FEV1/FVC54%6%43%68%
 PEF25–7538%14%17%66%
Post-bronchodilator (%)
 FEV160%7%46%80%
 FVC92%10%70%109%
 FEV1/FVC56%6%45%70%
 PEF25–7540%12%19%66%
CT inter-lumen diameter (mm)
 Insp-RB111.491.988.214.2
 Insp-RB105.891.194.28
 Insp-LB33.210.392.33.9
 Exp-RB17.111.145.99.5
 Exp-RB103.660.62.94.9
 EXP-LB31.640.450.92.4
  1. Continues data represented as (mean, SD, minimum, and maximum)
  2. SD standard deviation, FEV1% forced expiratory volume in 1 s, FVC% forced volume capacity, PEF25–75% peak expiratory flow at 25–75% level, RB1 apical bronchus of the right upper lobe, RB10 the posterior basal bronchus of the right lower lobe, LB3 the anterior bronchus of the left upper lobe