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Table 2 Comparison of FEV 1 % and FVC% by the Korean equations

From: Discordance in Spirometric Interpretations Based on Korean and Non-Korean Reference Equations

 

Age group

Choi

Lee

Mean difference (95% CI)

Measured/Calculated

40-49

93.6 ± 10.6

95.7 ± 10.8

-2.1 ± 1.1*

    

(-2.3 - -2.0)

FEV1(%)

≥ 50

92.1 ± 11.9

92.8 ± 14.8

-1.9 ± 1.5*

    

(-2.1 - -1.7)

 

Total

92.1 ± 11.9

94.1 ± 13.3

-2.0 ± 1.3*

    

(-2.1 - -1.9)

Measured/Calculated

40-49

98.9 ± 11.3

101.3 ± 11.4

-2.4 ± 1.9*

    

(-2.6 - -2.1)

FVC(%)

≥ 50

97.6 ± 11.3

101.2 ± 12.8

-4.5 ± 2.0*

    

(-4.7 - -4.2)

 

Total

97.6 ± 11.3

101.2 ± 12.2

-3.5 ± 2.2*

    

(-3.7 - -3.3)

  1. * p-value < 0.01 by paired t-test.