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. 2011 Dec 12;9(4):221–227. doi: 10.4321/s1886-36552011000400007

Table 2.

Spirometry Results

Characteristics NormalSpirometry
(N = 32)
Abnormal Spirometry
(N = 19)
p value *
Pre-bronchodilator
(Mean)
Pre-bronchodilator
Mean
FVC (L) 2.94 3.06 NS
FEV1 (L) 2.66 2.13 0.003
FEV1/FVC (%) 93.5 70 < 0.001
FEF 25-75% (L/sec) 3.72 1.47 <0.001
PEFR (L/sec) 5.51 5.63 NS
       
  Post-bronchodilator
(Mean)
Post-bronchodilator
(Mean)
p value *
FVC (L) 3.19 2.24 NS
FEV1 (L) 2.68 1.71 0.005
FEV1/FVC (%) 82.5 76.5 <0.001
FEF 25-75% (L/sec) 3.08 1.38 <0.001
PEFR (L/sec) 4.46 4.64 NS
FVC- Forced Vital Capacity (L - liters), FEV1 - Forced Expiratory Volume in 1 second, FEF25-75% - Forced Expiratory Flow during the middle half of the FVC (L/sec – liters/second), PEFR - Peak Expiratory Flow Rate
* The p value for each row were compared with a t test.